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Singapore, 16 December 2022 – Northeast Monsoon conditions are currently prevailing over Singapore and the surrounding region. The wet phase of the monsoon is expected to continue into January 2023, followed by the dry phase from February to mid-March 2023. For the rest of December 2022, the low-level winds are forecast to blow from the northwest or northeast. Generally wet and cool conditions can be expected during this time.

2      In the second half of December 2022, moderate to heavy thundery showers are expected over parts of the island in the afternoon on most days. The showers may extend into the evening on a few days. A brief strengthening of northerly winds over the Singapore and the surrounding region can also be expected in the coming fortnight. This could bring windy conditions with occasional showers on two or three days. Overall, the total rainfall for December 2022 is forecast to be near average over most parts of Singapore.

3      For the next two weeks, the daily temperature is forecast to range between 24 degrees Celsius and 32 degrees Celsius on most days. On two or three days, the daily maximum temperature may reach a high of around 33 degrees Celsius. Daily lows of around 23 degrees Celsius can be expected on a few rainy days.

4      For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 15 December 2022)

5      In the first half of December 2022, Northeast Monsoon conditions prevailed over Singapore and the surrounding region, and the low-level winds blew mainly from the northwest or northeast.

6      Singapore experienced short-duration moderate to heavy afternoon thundery showers on most days in the first fortnight of December 2022. The showers extended into the evening on a few occasions. On 11 December 2022, large-scale convergences of winds over Singapore and the surrounding vicinity led to the development of a Sumatra squall that brought widespread moderate to heavy thundery showers in the morning and early afternoon. The daily total rainfall of 127.4mm, recorded around West Coast Road area, was the highest daily total rainfall for the first fortnight of December 2022.

7      In the first half of December 2022, the daily maximum temperature was below 32 degrees Celsius on most days due to the rainy weather. There were two days when the daily maximum temperature was higher than 33 degrees Celsius. Cooler temperatures were experienced in the first fortnight of December 2022. All days in the first fortnight of December 2022 registered daily minimum temperatures of 24 degrees Celsius or less with the lowest of 22.2 degrees Celsius recorded at Jurong West on 3 December 2022.

8      During the fortnight, rainfall was above average for the southwestern part of the island, while the rainfall for northwestern part of Singapore was below average. The highest rainfall anomaly of 49 per cent above average was recorded at Kent Ridge. The anomaly was lowest at Jurong West at 55 per cent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for December
(Climatological reference period: 1991 – 2020)

Historical Extremes for December
(Rainfall since 1869 and temperature since 1929)

Singapore, 1 December 2022 – The prevailing Northeast Monsoon conditions are expected to persist over the next few months. During this period, the low-level winds are forecast to blow mainly from the northwest or northeast. The current wet weather is likely to continue, with thundery showers expected on most days in the next fortnight.

2        Climatologically, December is the wettest month of the year. In the first half of December 2022, the monsoon rain band is forecast to lie close to the equator and bring shower activities to the surrounding region of Singapore. Short-duration moderate to heavy thundery showers are expected over parts of the island in the afternoon on most days. The showers may extend into the evening on occasions. In addition, in the early part of the fortnight, low-pressure systems developing in the region are forecast to bring a temporary shift in the winds to blow from the southwest or west over Singapore and the surrounding vicinity. This may result in the passage of Sumatra squalls bringing widespread thundery showers with occasional gusty winds in the morning on a few days. The total rainfall for the first fortnight of December 2022 is forecast to be near average over most parts of Singapore.

3        During the fortnight, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius on most days. Although thundery showers are expected on most days, the daily maximum temperature could reach a high of around 34 degrees Celsius on a few days.

4        For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 30 November 2022)

5        In the first fortnight of November 2022, inter-monsoon conditions prevailed over Singapore, with prevailing winds generally light and variable in direction. In the latter half of November 2022, the low-level winds gradually strengthened and blew mostly from the northeast or northwest. This change in monsoonal winds signalled the start of the Northeast Monsoon season.

6        The monsoon rain band was located over the equatorial Southeast Asia region and brought wet weather over Singapore on most days in November 2022. Large-scale convergence of winds over Singapore and the surrounding vicinity led to the development of several Sumatra squalls that brought widespread showers and gusty winds between the early and pre-dawn hours on many days. Thundery showers also fell over the island on several afternoons and nights. The Sumatra squall which brought gusty winds and heavy thundery showers in the early hours of 14 November 2022 resulted in a daily total rainfall of 157.2mm recorded around the Jurong West area. This was the highest daily total rainfall for November 2022.

7        The daily maximum temperature was below 33 degrees Celsius on most days in November 2022 due to the rainy weather. There were five days when the daily maximum temperature was higher than 34 degrees Celsius. The highest daily maximum temperature for November 2022 was 35.6 degrees Celsius recorded at Ang Mo Kio on 16 November 2022. The rainy weather and cloudy skies on 5 November 2022 brought the minimum temperature around Jurong area to a low of 21.8 degrees Celsius.

8         In November 2022, rainfall was above average for most of Singapore except for the southern part of the island, where rainfall was below-average. The highest rainfall anomaly of 87 per cent above average was recorded at Yio Chu Kang. The anomaly was lowest at Sentosa at 37 per cent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for December
(Climatological reference period: 1991 – 2020)

Historical Extremes for December
(Rainfall since 1869 and temperature since 1929)

Singapore, 16 November 2022 – Inter-monsoon conditions with low level winds that are light and variable in direction have been prevailing over Singapore since the last week of October 2022. Around the end of November 2022, the low-level winds are forecast to gradually strengthen and shift to blow mostly from the northeast or northwest. This change in monsoonal winds signal the start of the Northeast Monsoon season which typically extends into March 2023.

2        The second fortnight of November 2022 is not expected to be as wet as the first fortnight of the month. In the second half of the month, short-duration thundery showers are expected on some days in the afternoon and may extend into the evening on a few days. In addition, in the early part of the fortnight, low-pressure systems developing over the northern South China Sea are forecast to bring a temporary shift in the winds to blow from the southwest or west over Singapore and the surrounding vicinity. This may result in the passage of Sumatra squalls bringing widespread thundery showers with occasional gusty winds over Singapore between the early hours and early morning on a few days. With well above-average rainfall registered in the first half of the month and less wet weather to be expected for the second fortnight, the overall rainfall for November 2022 is likely be slightly above-average over most parts of the island.

3        For the rest of November 2022, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius on most days and may reach around 34 degrees Celsius on a few days when there is less cloud cover.

4        For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 15 November 2022)

5        In the first fortnight of November 2022, inter-monsoon conditions prevailed over Singapore, with prevailing winds generally light and variable in direction. On some days, the low-level winds blew from the southwest or west.

6        The monsoon rain band was located over the equatorial Southeast Asia region and brought wet weather over Singapore on most days in the first half of November 2022. Large-scale convergences of winds over Singapore and the surrounding vicinity led to the development of several Sumatra squalls that brought widespread showers and gusty winds between the early and pre-dawn hours on many days. Thundery showers also fell over the island on several afternoons and nights. The Sumatra squall which brought gusty winds and heavy thundery showers in the early hours of 14 November 2022 resulted in a daily total rainfall of 157.2mm recorded around the Jurong West area. This was the highest daily total rainfall for the first fortnight of November 2022.

7        The daily maximum temperature was below 33 degrees Celsius on most days in the first half of November 2022 due to the rainy weather. There was only one day when the daily maximum temperature was higher than 34 degrees Celsius. In the first fortnight of November 2022, the highest daily maximum temperature of 34.3 degrees Celsius was recorded at Paya Lebar on 4 November 2022. The rainy weather and cloudy skies on 5 November 2022 brought the minimum temperature around Jurong area to a low of 21.8 degrees Celsius.

8         In the first half of November 2022, rainfall was well-above average for most parts of Singapore except in the southern part of the island, where rainfall was slightly below-average. The highest rainfall anomaly of 124 per cent above average was recorded at Woodlands. The anomaly was lowest at Sentosa at 15 per cent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for November
(Climatological reference period: 1991 – 2020)

Historical Extremes for November
(Rainfall since 1869 and temperature since 1929)

Singapore, 1 November 2022 – Inter-monsoon conditions have prevailed over Singapore in the second half of October 2022 and will likely persist into November 2022. The current wet weather is expected to continue, with thundery showers expected on most days in the first fortnight of November 2022.

2        With the monsoon rain band forecast to remain over the Southeast Asia region, Singapore can expect a continuation of wet days in the coming fortnight. During the period, thundery showers are forecast on most days. In the first week of November 2022, Sumatra squalls developing in the Strait of Malacca may bring widespread thundery showers with occasional gusty winds as they pass Singapore between the pre-dawn hours and morning on some days. In the latter half of the fortnight, afternoon thundery showers can be expected on most days, with the showers extending into the evening on a few days. The total rainfall for the first fortnight of November 2022 is forecast to be above average over most parts of the island.

3        During the fortnight, the daily temperature on most days is forecast to range between 24 degrees Celsius and 33 degrees Celsius. The wetter weather may bring relatively lower temperatures on a few days, with daily minimum temperatures below 23 degrees Celsius and daily maximum temperatures below 32 degrees Celsius.

4        For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 31 October 2022)

5        In the second half of October 2022, Singapore and the surrounding region experienced inter-monsoon conditions. The low-level winds that blew predominantly from the southeast or southwest since June 2022 gradually weakened and became mostly light and variable in direction. The monsoon rain band remained close to the equatorial Southeast Asia region, and brought thundery showers over Singapore on most days in the second half of the month.

6        In October 2022, the influence of several tropical storms over the South China Sea and Western Pacific Ocean resulted in large-scale convergence of winds over Singapore and the surrounding vicinity. This led to the development of several Sumatra squalls that brought widespread showers and gusty winds over Singapore between the pre-dawn hours and morning on most days. Thundery showers also fell over the island on several afternoons and nights. The Sumatra squall which brought heavy thundery showers over many parts of Singapore in the morning of 5 October 2022 resulted in a daily total rainfall of 138.1mm recorded at Pasir Panjang. This was the highest daily total rainfall for October 2022.

7        Based on the rainfall averaged across the island-wide stations with long-term records since 1980, October 2022 is the wettest October in four decades, with a monthly total rainfall of 412.0mm. This exceeded the previous highest October rainfall of 389.3mm, which was recorded in October 2011. The Changi climate station experienced a total of 27 rain days in October 2022. This is the highest number of rain days occurring in October at the Changi climate station since the 1980s, and surpasses the previous record of 21 days observed in 1985 and 2003.

8        In October 2022, the daily maximum temperature was below 33 degrees Celsius on most days due to the rainy weather. The wet weather brought several days with cool night time temperatures. There were 23 days with daily minimum temperatures of 24 degrees Celsius or less. The temperature at Jurong Island dropped to 21.9 degrees Celsius during the showers on 12 October 2022. That was the lowest daily minimum temperature for October 2022.

9      Well above-average rainfall was received across the island in October 2022. The highest anomaly of 232 per cent above-average was recorded around the Kent Ridge area. The anomaly was lowest at Paya Lebar at 29 per cent above-average.

CLIMATE STATION STATISTICS

Long-term Statistics for November
(Climatological reference period: 1991 – 2020)

Historical Extremes for November
(Rainfall since 1869 and temperature since 1929)

Singapore, 17 October 2022 – The current wet weather is expected to continue for the rest of October 2022. The prevailing Southwest Monsoon conditions, with low-level winds blowing from the southeast or west, are forecast to gradually weaken to become light and variable in direction by the end of October 2022. The shift in wind conditions signals the end of the Southwest Monsoon and the start of the inter-monsoon period.

2          The inter-monsoon conditions are forecast to last through November 2022. During the inter-monsoon period, the monsoon rain band lies close to the equatorial region, and more showers can be expected over Singapore and the surrounding vicinity. Lightning activity tends to be higher during the inter-monsoon months than other months of the year.

3          In the coming fortnight, thundery showers are expected on most days. On some days in the earlier half of the fortnight, the presence of low-pressure systems over the South China Sea may induce the development of Sumatra squalls in the Strait of Malacca and bring widespread thundery showers with gusty winds to Singapore and the surrounding vicinity between the pre-dawn hours and morning. In the latter half of the fortnight, afternoon thundery showers are forecast on most days, with the showers extending into the evening on a few of these days. On a few days, widespread moderate to heavy thundery showers may occur, due to large-scale convergence of winds over Singapore and the surrounding region. Overall, the rainfall for October 2022 is expected to be well above-average over most parts of Singapore.

4          For the rest of October 2022, the daily temperature on most days is forecast to range between 24 degrees Celsius and 33 degrees Celsius. Although showers are expected on most days in the coming fortnight, the daily maximum temperature could still reach a high of around 34 degrees Celsius on a few days. In addition, the wet weather may bring daily temperatures of between 23 and 32 degrees Celsius on a few days.

5    For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 16 October 2022)

6          In the first fortnight of October 2022, Southwest Monsoon conditions continued to persist in the region with the low-level winds blowing mostly from the southeast or southwest, and from the west on some days.

7          During the period, the influence of several tropical storms over the South China Sea and Western Pacific Ocean resulted in large-scale convergence of winds over Singapore and the surrounding vicinity. This likely led to the development of several Sumatra squalls that brought widespread showers and gusty winds over Singapore between the pre-dawn hours and morning on most days. Thundery showers also fell over the island on a few nights. The Sumatra squall which brought heavy thundery showers over many parts of Singapore on the morning of 5 October 2022 resulted in a daily total rainfall of 138.1 mm recorded at Pasir Panjang. This was the highest rainfall recorded in a day in the first half of October 2022.

8         The Sumatra squalls brought cloudy and cool conditions on most days in the first fortnight of October 2022. There were 11 days during the review period when the daily maximum temperature was lower than 33 degrees Celsius. The wet weather also brought several days with cool night-time temperatures. There were nine days with daily minimum temperatures of 23 degrees Celsius or less. The temperature at Jurong Island dropped to 21.9 degrees Celsius during the showers on 12 October 2022. That was the lowest daily minimum temperature for the first half of October 2022.

9          Well above-average rainfall was received across the island in the first fortnight of October 2022. The highest anomaly of 318 percent above-average was recorded around the Kent Ridge area. The anomaly was lowest at Paya Lebar at 19 percent above-average.

CLIMATE STATION STATISTICS

Long-term Statistics for October
(Climatological reference period: 1991 – 2020)

Historical Extremes for October
(Rainfall since 1869 and temperature since 1929)

Singapore, 30 September 2022 – The current wet weather is expected to continue in the first half of October 2022. During this period, thundery showers are expected on most days. The prevailing Southwest Monsoon conditions are forecast to persist over Singapore and the surrounding region in the next fortnight with the low-level winds blowing from the south or west on most days.

2    In the first half of October 2022, thundery showers can be expected between the morning and early afternoon on most days. In the first weekend of October 2022, the convergence of low-level winds in the region could bring moderate to heavy thundery showers over Singapore in the afternoon. In the latter half of the fortnight, Sumatra squalls developing in the Strait of Malacca may bring widespread thundery showers with occasional gusty winds as they pass Singapore between the pre-dawn hours and morning on some days. The total rainfall for the first fortnight of October 2022 is forecast to be above average over most parts of the island.

3    During the fortnight, the daily temperature on most days is forecast to range between 24 degrees Celsius and 33 degrees Celsius. The wet weather may bring daily temperatures of between 23 and 32 degrees Celsius on a few days.

4    For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 29 September 2022)

5    In September 2022, Southwest Monsoon conditions prevailed over Singapore and the surrounding region, with the low-level winds blowing mostly from the southeast or southwest.

6    There were more showers in the second half of September 2022 compared to the first half of the month. On several days of the month, moderate to heavy thundery showers affected the island in the morning, extending into the early afternoon on a few days. On the Sunday mornings on 18 and 25 September 2022, large-scale convergence of winds over Singapore and the surrounding region brought widespread heavy thundery showers with more than 100 mm of rain over parts of Singapore. The highest daily total rainfalls of 123.6 mm and 127.6 mm were recorded around West Coast Road on 18 September 2022 and around Tuas South on 25 September 2022 respectively. These were the highest daily total rainfalls for September 2022.

7    In September 2022, the daily maximum temperature was below 33 degrees Celsius on most days due to the rainy weather. The wet weather brought several days with cool night time temperatures. There were 21 days with daily minimum temperatures of 24 degrees Celsius or less. The temperature at Jurong West dropped to 21.6 degrees Celsius during the morning showers on 25 September 2022. That was the lowest daily minimum temperature for September 2022.

8    The rainfall was above average for many parts of the island in September 2022. The highest rainfall anomaly of 93 percent above average was recorded at Lower Pierce Reservoir. The anomaly was lowest at Chai Chee at 23 percent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for October
(Climatological reference period: 1991 – 2020)

Historical Extremes for October
(Rainfall since 1869 and temperature since 1929)

Singapore, 16 September 2022 – The prevailing Southwest Monsoon conditions are forecast to persist over Singapore and the surrounding region in the next fortnight. During this period, the low-level winds are expected to continue blowing from the southeast or southwest.

2    In the next two weeks, short-duration thundery showers can be expected between the late morning and afternoon on most days. In the latter half of the fortnight, the convergence of winds over the region may influence the development of Sumatra squalls and bring widespread thundery showers and gusty winds over Singapore on a few mornings. Overall, more rainfall is expected in the second half of September 2022 compared to the first half of the month. The overall rainfall for September 2022 will likely be near normal over most parts of the island.

3    During the fortnight, the daily temperature on most days is forecast to range between 24 degrees Celsius and 33 degrees Celsius. There may be a few warm days, particularly in the first half of the fortnight, when maximum temperatures could reach around 34 degrees Celsius.

4    For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 15 September 2022)

5    In the first fortnight of September 2022, Southwest Monsoon conditions prevailed over Singapore and the surrounding region with the low-level winds blowing mostly from the southeast or southwest.

6    During this period, the monsoon rain band was mostly situated over the northern Southeast Asia region, resulting in less wet weather over equatorial Southeast Asia including Singapore. Short-duration thundery showers fell over parts of Singapore in the afternoon on some days. On a few mornings, large-scale convergence of winds over Singapore and the surrounding region brought widespread moderate to heavy thundery showers. The highest daily total rainfall for the first half of September 2022 occurred on 13 September 2022, when 92.2 mm of rain fell around the West Coast Road area in the morning.

7    During the first half of September 2022, the daily maximum temperature ranged from 30.7 degrees Celsius to 34.4 degrees Celsius. The highest daily maximum temperature of 34.4 degrees Celsius was recorded at Paya Lebar on 12 September 2022.

8    The rainfall was below average for many parts of the island in the first fortnight of 2022. The highest rainfall anomaly of 53 percent above average was recorded at Sembawang. The anomaly was lowest at Simei at 89 percent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for September
(Climatological reference period: 1991 – 2020)

Historical Extremes for September
(Rainfall since 1869 and temperature since 1929)

Singapore, 1 September 2022 – The first fortnight of September 2022 is expected to be wet with a few warm days. The prevailing Southwest Monsoon conditions are forecast to persist over Singapore and the surrounding region, and the low-level winds are expected to blow from the southeast or southwest on most days.

2    In the first half of September 2022, the monsoon rain band is expected to lie over the equatorial Southeast Asia region. Thundery showers are forecast between the morning and early afternoon over parts of Singapore on most days. In addition, the development of low-pressure systems over the northern South China Sea could trigger Sumatra squalls over the Strait of Malacca, and bring widespread thundery showers and gusty winds to Singapore between the early and pre-dawn hours on some days. On one or two days, widespread moderate to heavy thundery showers can be expected when prevailing winds in the region converge over Singapore and the surrounding region. The total rainfall for first half of September 2022 is likely to be near average over most parts of the island.

3    During the fortnight, the daily temperature on most days is expected to range between 24 and 33 degrees Celsius. On some rainy days, the daily minimum temperature may dip to around 22 degrees Celsius. The daily maximum temperature could reach a high around 34 degrees Celsius on a few days. In addition, warm and humid conditions can be expected on a few nights when prevailing winds from the southeast or south blow warm and humid air from the sea. The minimum night-time temperatures may reach around 28 degrees Celsius, particularly over the south-eastern parts of the island.

4    For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 31 August 2022)

5    In August 2022, Southwest Monsoon conditions prevailed over the region. The low-level winds blew from the southeast or southwest on most days, and from the east on a few days.

6  There were more showers in the second half of August 2022 compared to the first half of the month. The wet weather can be largely attributed to the passage of the wet phase of the Madden-Julian Oscillation (MJO) over the equatorial region. On most days in the month, moderate to heavy thundery showers affected the island in the late morning and afternoon, extending into the evening on a few days. The passage of Sumatra squalls brought widespread thundery showers with gusty winds to Singapore in the morning on several days. On 23 August 2022, large-scale convergence of winds in the surrounding vicinity brought moderate to heavy thundery showers and gusty winds over Singapore in the morning. The highest daily total rainfall recorded that day was 118.2mm at Jurong. This was the highest daily total rainfall for August 2022.

7    In August 2022, the daily maximum temperature was below 34 degrees Celsius on most days due to the rainy weather. The wet weather brought several days with cool night time temperatures. There were 20 days with daily minimum temperatures of 24 degrees Celsius or less. The lowest daily minimum temperature was 21.7 degrees Celsius recorded at Jurong on 16 August 2022. There were a few warm days mainly in the first half of August 2022, and the highest daily maximum temperature recorded in August 2022 was 35.1 degrees Celsius at Marina Barrage on 11 and 17 August 2022. On a few nights during the month, the daily minimum temperature over the southern, eastern and western coastal areas of the island were above 28 degrees Celsius.

8    About two-third of Singapore experienced above average rainfall in August 2022, with most of the rain falling over the northern and western parts of Singapore. The rainfall recorded at Jurong was 115 percent above average while that recorded at Chai Chee was 21 percent below average.

CLIMATE STATION STATISTICS

Long-term Statistics for September
(Climatological reference period: 1991 – 2020)

Historical Extremes for September
(Rainfall since 1869 and temperature since 1929)

NEA and SLA have signed a Memorandum of Understanding (MOU) on 2 August 2022 to develop the use of Global Navigation Satellite System (GNSS) data, obtained from SLA’s Singapore Satellite Reference Network (SiReNT) to enable better monitoring of island-wide atmospheric moisture.

Under the MOU, MSS’ GNSS station will be integrated into SiReNT which will enable MSS to obtain island-wide, continuous, and near real-time atmospheric moisture readings. This will augment MSS’ existing observation network data, enhancing our weather monitoring and forecasting capabilities.

For more details, please refer to the press release on the NEA website.

Singapore, 16 August 2022 – More thundery showers are expected in the second half of August 2022, compared to the first half of the month. The prevailing Southwest Monsoon conditions are forecast to persist over Singapore and the surrounding region with the low-level winds to continue blowing from the southeast or southwest.

2    On most days over the next two weeks, short-duration moderate to heavy thundery showers can be expected between the late morning and afternoon. Convergence of winds in the surrounding vicinity could bring thundery showers over the island on a few nights. In addition, Sumatra squalls may bring widespread thundery showers with occasional gusty winds in the pre-dawn and morning on a few days. Overall, more rainfall is expected in the second half of August 2022 compared to the first half of the month. The overall rainfall for August 2022 will likely be above-average over most parts of the island.

3    While more showers are expected in the coming fortnight, there could still be a few warm days with daily highs of around 34 degrees Celsius. On most days, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius. On a few rainy days, the daily minimum temperature may dip to below 23 degrees Celsius. Warm and humid night with minimum night-time temperatures of up to 28 degrees Celsius can be expected on some days, particularly in the eastern and southern coastal areas when prevailing winds blowing from the southeast bring warm, humid air from the surrounding seas.

4    For updates of the daily weather forecast, please visit the MSS website (https://www.weather.gov.sg), NEA website (www.nea.gov.sg), or download the myENV app.

REVIEW (1 – 15 August 2022)

5    In the first fortnight of August 2022, Southwest Monsoon conditions prevailed over Singapore and the surrounding region. During the period, the low-level winds blew from the southeast or southwest. There were some days when the winds over Singapore and the surrounding region strengthened to blow from the west due to the influence of tropical storms over the South China Sea and north-western Pacific Ocean.

6    In the first two weeks of August 2022, the monsoon rain band was mostly situated over the northern Southeast Asia region, resulting in less wet weather over equatorial Southeast Asia including Singapore. There were however several days where thundery showers fell over parts of the island mainly in the late morning and afternoon. These showers were mostly localised and of short-duration. On the afternoon of 2 August 2022, large-scale convergence of winds over Singapore and the surrounding region led to the development of moderate to heavy thundery showers over many areas of the island.  The showers were particularly intense over the western and northern parts of Singapore. The daily total rainfall of 78.6 mm recorded at Kranji was the highest daily total rainfall recorded in the first half of August 2022.

7     During the first half of August 2022, the daily maximum temperature ranged from 29.5 degrees Celsius to 35.1 degrees Celsius. There were a few dry and warm days where the daily maximum temperature exceeded 34 degrees Celsius. The highest daily maximum temperature of 35.1 degrees Celsius was recorded at Marina Barrage on 11 August 2022. On a few nights during the period, the daily minimum temperature over the southern, eastern and western coastal areas of the island were above 28°C.

8     In the first fortnight of August 2022, the western half of Singapore received above-average rainfall, while the eastern half of the island received below-average rainfall. The rainfall recorded at Jurong was 105 percent above-average while that recorded at Tanjong Katong was 83 percent below-average.

CLIMATE STATION STATISTICS

Long-term Statistics for August
(Climatological reference period: 1991 – 2020)

Historical Extremes for August
(Rainfall since 1869 and temperature since 1929)