Category Archives: News

Singapore, 1 March 2023 – The prevailing Northeast Monsoon conditions are expected to continue into the first fortnight of March 2023, with the low-level winds blowing from the northwest or northeast.

2      The widespread and continuous rainy conditions experienced in the end of February are likely to gradually ease in early March 2023. In the first week of the fortnight, the monsoon rain band is forecast to remain over the equatorial region and thundery showers are expected in the afternoon on most days. The showers may extend into the evening on a few days. The latter half of the fortnight is forecast to be relatively drier, with localised short-duration thundery showers expected in the late afternoon over parts of the island on some days. Overall, the total rainfall for the first half of March 2023 is forecast to be above average over most parts of Singapore.

3       During the fortnight, the daily temperature is expected 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 – 28 February 2023)

5      Northeast Monsoon conditions prevailed over Singapore and the surrounding region in February 2023. The low-level winds blew from the northwest or northeast.

6      The second half of February 2023 was generally dry until the end of the month. On 28 February 2023, the strengthening of the high-pressure system over the northern Asian continent brought a surge of strong north-easterly winds (or monsoon surge[1]) over the South China Sea. The monsoon surge brought widespread continuous moderate to heavy thundery showers over Singapore and the surrounding region with all stations across the island recording more than 100mm of rainfall. The rain was heaviest over the eastern and southern parts of Singapore with the highest daily total rainfall of 225.5mm recorded at Kallang. This was the highest daily total rainfall ever recorded in February, exceeding the previous record of 159.3mm on 4 February 1995

7      In February 2023, the daily maximum temperature was below 33 degrees Celsius on most days. The highest daily maximum temperature of 34.2 degrees Celsius was recorded at Ang Mo Kio on 10 February 2023 while the lowest daily minimum temperature of 21.3 degrees Celsius was recorded at Jurong on 15 February 2023.

8      Well above average rainfall was received across the island in February 2023. The highest anomaly of 281 per cent above average was recorded at around Tanjong Katong area. The anomaly was lowest at Mandai at 81 per cent above average.

[1] A monsoon surge refers to a strengthening of winds over the South China Sea, causing extensive rainclouds to form over our surrounding region. Read more at https://www.weather.gov.sg/learn_weather_systems/

CLIMATE STATION STATISTICS

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

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

Singapore, 16 February 2023 – The prevailing Northeast Monsoon conditions are forecast to continue into the second fortnight of February 2023. For the next two weeks, the low-level winds over Singapore and the surrounding region are forecast to blow mostly from the northeast or northwest.

2       The second half of February 2023 is expected to be drier than the first half of the month. The presence of a dry air mass may bring relatively fair and occasionally windy conditions to Singapore on a few days in the coming fortnight. Localised short-duration thundery showers, due to convergence of prevailing winds with the sea breeze, can still be expected in the afternoon over parts of the island on some days. Overall, near average rainfall can be expected for the second half of February 2023 and the total rainfall for the month is likely be above average over most parts of the island.

3        For the rest of February 2023, the daily temperatures are forecast to range between 24 degrees Celsius and 33 degrees Celsius on most days. The maximum temperature could reach around 34 degrees Celsius on days with little or no rain.

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 February 2023)

5       Northeast Monsoon conditions prevailed over Singapore and the surrounding region in the first half of February 2023. The low-level winds blew from the northwest or northeast.

6        During the first two weeks of February 2023, thundery showers fell over parts of the island in the afternoon and evening on most days. On the afternoon of 12 February 2023, 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 northern and western parts of Singapore. The daily total rainfall of 108.1 mm recorded at Woodlands was the highest daily total rainfall recorded in the first half of February 2023.

7        It was relatively cool in the first half of February 2023 with only one day when the daily maximum temperature was higher than 34 degrees Celsius. The highest daily maximum temperature of 34.2 degrees Celsius was recorded at Ang Mo Kio on 10 February 2023. The daily minimum temperature hovered around 23 degrees Celsius on most days, with the lowest minimum temperature of 21.3 degrees Celsius recorded at Jurong on 15 February 2023.

8        Well above average rainfall was received across the island in the first fortnight of February 2023. The highest anomaly of 308 per cent above average was at Sentosa. The anomaly was lowest around Mandai area at 51 per cent above average.

CLIMATE STATION STATISTICS

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

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

Singapore, 30 December 2022 – The Northeast Monsoon conditions currently prevailing over the region are forecast to persist into January 2023, with low-level winds blowing from the northwest or northeast.

2          In the first weekend of the new year, the strengthening of the high-pressure system over the northern Asian continent is expected to bring a surge of strong north-easterly winds (or monsoon surge) over the South China Sea. With the rain band located away from Singapore during this time, the surge will likely bring dry and windy conditions over Singapore and the surrounding vicinity. Thereafter, 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. Overall, the total rainfall for the first fortnight of 2023 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. On one or two days, the daily maximum temperature may reach a high of around 34 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 – 29 December 2022)

5          In December 2022, Northeast Monsoon conditions prevailed over Singapore and the surrounding region. During this period, 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 December 2022. The showers extended into the evening on a few occasions. The Northeast Monsoon brought relatively windy conditions and afternoon passing showers to Singapore and the surrounding region on a few days in the last week of the month. On 11 December 2022, large-scale convergence 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 the West Coast Road area, was the highest daily total rainfall for December 2022.

7          In December 2022, the daily maximum temperature was below 32 degrees Celsius on most days, due to the rainy and cloudy weather conditions. There were five days when the daily maximum temperature was higher than 33 degrees Celsius. Cooler temperatures were experienced in December 2022. All except two days in 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          The rainfall was below average for most parts of the island in December 2022. The highest rainfall anomaly of 15 per cent above average was recorded at Sengkang East. The anomaly was lowest at Jurong West at 49 per cent below average.

CLIMATE STATION STATISTICS

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

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

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)