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Singapore, 1 August 2024 – Southwest Monsoon conditions are prevailing, with winds continuing to blow mainly from the southeast or southwest.

2          In the first half of August 2024, thundery showers are expected over parts of the island in the late morning and afternoon on most days. In addition, Sumatra squalls may bring widespread thundery showers and gusty winds on one or two mornings. The total rainfall for the first fortnight of August 2024 is forecast to be near average over most parts of the island.

3          The daily maximum temperatures are likely to range between 32 degrees Celsius and 34 degrees Celsius on most days. A few nights may also be warm and humid, and the temperatures may stay above 28 degrees Celsius.

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

REVIEW OF THE PAST TWO WEEKS (16 – 31 July 2024)

5          Southwest Monsoon conditions prevailed over Singapore and the surrounding region in the second fortnight of July 2024, with the prevailing winds blowing mostly from the southeast or south.

6          Singapore and the surrounding region experienced dry weather in the second half of July 2024. Singapore experienced a dry spell of 18 days between 13 and 30 July 2024[1]. The thundery showers on 31 July 2024 brought an end to the dry spell. The daily total rainfall of 55.8 mm recorded at Buona Vista on that day was the highest rainfall for the second half of July 2024.

7          In the second fortnight of July 2024, the daily maximum temperatures were between 32.8 degrees Celsius and 35.2 degrees Celsius. The nights were warm with daily minimum temperatures above 28 degrees Celsius over most parts of Singapore.

8          With little rainfall from around mid-July, many areas across the island registered well below average rainfall.

[1] A dry spell is defined as a period of at least 15 consecutive days with daily total rainfall of less than 1.0 millimetre (mm), averaged over islandwide stations with long-term records. The last recorded dry spell in Singapore lasted 17 days from 31 July to 16 August 2019.

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CLIMATE STATION STATISTICS

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

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

Singapore, 1 December 2023 – The Northeast Monsoon is expected to become established over Singapore and the surrounding region during the coming fortnight, with the winds strengthening and blowing mostly from the northwest and northeast.

2    The current wet weather is likely to continue, with thundery showers expected over parts of the island on most afternoons. The showers may extend into the night on a few days. The total rainfall for the first half of December 2023 is forecast to be above average over most parts of the island.

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 may reach 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 OF THE PAST TWO WEEKS (16 – 30 November 2023)

5    Inter-monsoon conditions prevailed over Singapore and the surrounding region in the second half of November 2023, with low-level winds generally light and variable in direction.

6    In the second fortnight of November 2023, the monsoon rain band was located over the equatorial Southeast Asia region which brought wet weather over Singapore. Thundery showers fell over parts of the island in the afternoon on most days. The showers extended into the night on a few of these days. On 21 November 2023, widespread moderate to heavy thundery showers fell over many parts of Singapore in the afternoon. The daily total rainfall of 128.8 mm recorded at Bedok that day was the highest rainfall recorded for the second half of November 2023.

7    The daily maximum temperatures in the second fortnight of November 2023 was above 33 degrees Celsius on most days. The highest daily maximum temperature of 35.3 degree Celsius was recorded at Clementi on 17 November 2023.

8    Most parts of the island recorded above average rainfall in the second fortnight of November 2023. Ulu Pandan recorded rainfall of 119 per cent above average, and Admiralty recorded rainfall of 17 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 2023 – Inter-monsoon conditions are prevailing over the region, with the low-level winds generally light and variable in direction.

2    In the coming fortnight, the monsoon rain band is forecast to lie close to the equatorial region, bringing more thundery showers to Singapore. On most days during this period, short-duration thundery showers are expected over parts of the island in the afternoon, extending into the evening on a few days. The thundery showers could be widespread and heavy on some of these days. The total rainfall for the second fortnight of November 2023 is forecast to be above average over most parts of the island.

3    Warm conditions are expected in the coming fortnight. The daily temperature is likely to range between 24 degrees Celsius and 34 degrees Celsius on most days. The daily maximum temperature may reach a high of around 35 degrees Celsius on a few days when there are less clouds in the sky.

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 2023)

5    Singapore and the surrounding region experienced inter-monsoon conditions in the first half of November 2023. The low-level winds that blew predominantly from the southeast or southwest since June 2023 weakened and became mostly light and variable in direction.

6    Thundery showers occurred over parts of Singapore mainly in the afternoon on most days in the first half of the month. On 7 November 2023, widespread moderate to heavy thundery showers fell over many parts of the island in the afternoon. The daily total rainfall of 69.7 mm recorded at Woodland that day was the highest rainfall recorded for the first half of November 2023.

7    The first half of November 2023 was generally warm with daily maximum temperatures above 33 degrees Celsius on most days. The highest daily maximum temperature of 35.8 degree Celsius was recorded at Newton on 3 November 2023. This temperature reading ties with the record for highest daily maximum temperature in Singapore in the month of November (last recorded at Admiralty on 18 November 2019) since temperature records started in 1929.

8    Most parts of the island recorded below-average rainfall in the first half of November 2023. Queenstown recorded rainfall of 84 per cent below-average, and Simei recorded rainfall of 38 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, 23 October 2023 – The haze situation continues to improve with more rainfall in the surrounding region. As at 5pm, the 1-hr PM2.5 concentration readings were 5-22 µg/m³, in Band I (Normal), and the 24-hr PSI was 48-66, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    There were showers over Singapore and the surrounding region today. 47 hotspots were detected mainly in the southern and central parts of Sumatra, comparable to the hotspot count of 57 yesterday. Moderate smoke haze was observed over the southern parts of Sumatra.

3    The overall hotspot and haze situation is expected to remain subdued due to the expected wet weather over most of the region, and the prevailing winds are forecast to be light and variable in direction in the coming days. The likelihood of transboundary haze affecting Singapore is assessed to remain low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –

Singapore, 21 October 2023 – As at 6pm, the 1-hr PM_2.5 concentration readings were 5-12 µg/m³, in Band I (Normal), and the 24-hr PSI was 34-56, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    There were some showers over parts of Singapore and the surrounding region today. Hotspot activity in the region was generally subdued, with seven hotspots detected in southern Sumatra, comparable to the three hotspots detected yesterday. No significant smoke haze was observed due to rain and cloud cover.

3    In the coming days, showers are expected over Singapore and the surrounding region. The prevailing winds are forecast to be light and variable in direction. The regional hotspot and haze situation is expected to remain subdued and the likelihood of transboundary haze affecting Singapore is assessed to be low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –

Singapore, 20 October 2023 – As at 5pm, the 1-hr PM_2.5 concentration readings were 7-16 µg/m³, in Band I (Normal), and the 24-hr PSI was 41-59, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2   Showers were observed over much of Singapore and the surrounding region today. 3 hotspots were detected in southern Sumatra, comparable to the 4 hotspots detected yesterday. No significant smoke haze was observed over the region as there was extensive rain and cloud cover.

3    The regional hotspot and haze situation is expected to remain subdued under continued wet weather conditions in the coming days. Moreover, with prevailing winds forecast to be generally light and variable in direction, the likelihood of transboundary haze affecting Singapore is assessed to be low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –

Singapore, 19 October 2023 – As at 6pm, the 1-hr PM_2.5 concentration readings were 7-20 µg/m³, in Band I (Normal), and the 24-hr PSI was 37-62, in the Good to Moderate range.

Update on Hotspot and Haze Situation

2    There was rain over most parts of Singapore and the surrounding region today, bringing an improvement to the regional hotspot and haze situation. 4 hotspots were detected in southern and central Sumatra, lower than the 100 hotspots detected yesterday. No significant smoke haze was observed over southern and central Sumatra under thick cloud cover.

3    More showers are forecast for Singapore and the surrounding region over the next few days. The prevailing winds are forecast to be generally light and variable in direction. The return of wet weather is expected to keep the regional hotspot and haze situation subdued. The likelihood of transboundary haze affecting Singapore is assessed to be low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –

Singapore, 17 October 2023 – It was fair and warm over Singapore today. As at 6pm, the 1-hr PM_2.5 concentration readings were 8-22 µg/m³, in Band I (Normal), and the 24-hr PSI was 51-65, in the Moderate range.

Update on Hotspot and Haze Situation

2    The weather remained dry over most parts of the surrounding region today. 530 hotspots were detected in southern and central Sumatra, higher than the 285 hotspots detected yesterday. Smoke haze over southern and central Sumatra was observed to be blown towards the northwest by prevailing winds.

3    An increase in shower activities is forecast for Singapore and the surrounding region from tomorrow. The prevailing winds are forecast to blow mainly from the southeast or south, weakening to become light and variable in direction over the next few days. The likelihood of transboundary haze affecting Singapore is assessed to be low. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –

9 Oct 2023 saw the highest temperature ever recorded in the month of October at 36.3 degree Celsius

Singapore, 16 October 2023 – More showers are expected for the rest of October 2023 compared to the first half of the month, which may bring some respite to the warm weather.

2    Thundery showers are expected on most days in the coming fortnight. Afternoon thundery showers are expected this week, extending into the evening on a few days. In the second half of the fortnight, short-duration thundery showers may occur over parts of the island in the late morning and afternoon. On the whole, we expect above average rainfall in the second half of October 2023.

3    With showers expected on most days, temperatures are likely to be lower compared to the first half of the month.  Daily maximum temperatures are expected to range between 33 degrees Celsius and 34 degrees Celsius on most days.

4    More showers are also forecast for the southern Southeast Asia region in the coming fortnight, which may bring some improvement to the haze situation and reduce the likelihood of transboundary haze affecting Singapore. The chance of the 24-hr PSI reaching the unhealthy range in Singapore is low for the coming fortnight.

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

REVIEW OF THE PAST TWO WEEKS (1 – 15 October 2023)

6    Southwest Monsoon conditions prevailed over Singapore and the surrounding region in the first half of October 2023, with low-level winds blowing mostly from the southeast or southwest.

7    The first half of October 2023 was dry and warm, except for a few days when brief showers fell over Singapore. These conditions were due to suppressed rain cloud formation arising from a dry air mass moving over the surrounding region.

8    On 7 and 8 of October 2023, smoke haze from forest fires in central and southern Sumatra were blown by prevailing winds to Singapore. This resulted in hazy conditions with the air quality deteriorating into the Unhealthy range over parts of the island. The highest 24-hour PSI of 123 was recorded in the eastern part of Singapore between 8 and 9 pm on 7 October 2023.

9    In the first two weeks of October 2023, maximum temperatures rose above 34 degrees Celsius on most days.  On 9 October 2023, temperatures exceeded 35 degrees Celsius in several parts of Singapore, with 36.3 degrees Celsius recorded at Admiralty.  This is the highest temperature ever recorded in Singapore in the month of October, surpassing the previous record high of 35.7 degrees Celsius recorded on 14 October 2001 and 13 October 2019.

10   Well-below-average rainfall was recorded across the island in the first half of October 2023. The highest anomaly of 100 per cent below-average was recorded at Paya Lebar.

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, 14 October 2023 – Singapore experienced generally fair and warm weather today. As at 5pm, the 1-hr PM2.5 concentration readings were 11-26 µg/m3, in Band I (Normal), and the 24-hr PSI was 52-69, in the Moderate range.

Update on Hotspot and Haze Situation

2    Most parts of the surrounding region remained dry today, except for a few showers in northern Sumatra. 68 hotspots were detected mostly in the southern and central parts of Sumatra, lower than the 126 hotspots detected yesterday. Moderate to dense smoke haze was observed over parts of southern and central Sumatra from satellite imagery, drifting towards the north and northwest.

3 For the next few days, the dry conditions over Singapore and the surrounding region are forecast to continue, with prevailing winds likely to blow from the south, and occasionally from the southwest. There is a chance of slight haze affecting Singapore if the regional haze situation escalates. For the next 24 hours, the 24-hr PSI for Singapore is forecast to be in the Moderate range.

Activity Guidelines

4    The health impact of haze is dependent on one’s health status, the PSI level, and the length and intensity of outdoor activity. For immediate outdoor activities, please check the 1-hr PM2.5 concentration readings and personal guide. Use the 24-hr PSI forecast and corresponding health advisories for planning next day outdoor activities.

5     For updates, visit our haze microsite (www.haze.gov.sg), the NEA website (www.nea.gov.sg), MSS website (https://www.weather.gov.sg), mobile app (myEnv) or follow us on NEA Facebook (www.facebook.com/NEASingapore) and NEA Twitter (@NEAsg). For information on the distribution of hotspots detected over the past fortnight in the region, please refer to the ASEAN Specialised Meteorological Centre (ASMC) website at https://asmc.asean.org.

Areas with lighter smoke haze are not indicated as they cannot be clearly discerned from satellite imagery.

– End –