News

Filter by

Onset Of Inter-Monsoon Period Expected To Bring Improvement To Haze Situation

29 Oct 2026

Share

29 October 2026 – With the weakening of the Southwest Monsoon, inter-monsoon conditions have been progressively setting in over Singapore and the surrounding region. The inter-monsoon period is characterised by light and variable winds, as well as increased showers and higher lightning activity. With the shift from persistent southeasterly or southwesterly winds to light and variable winds in the surrounding region, smoke haze is less likely to be transported from fires towards Singapore. Together with wetter conditions over Singapore and the nearby areas, the smoke haze situation for Singapore is expected to improve.

2.       In the first fortnight of November 2026, 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 of these days. The total rainfall for the first fortnight of November 2026 is forecast to be slightly above its long-term average over most parts of the island.

3.       Daily maximum temperatures are expected to range between 33 degrees Celsius and 35 degrees Celsius on most days and could slightly exceed 35 degrees Celsius on a few days.

4.       For updates of the daily weather forecast, please visit the MSS website (www.weather.gov.sg) or download the myENV app. For updates on the latest haze situation, please refer to the Daily Haze Advisories. 

REVIEW OF THE PAST TWO WEEKS (16 – 28 October 2026)

5.       Southwest Monsoon conditions prevailed over Singapore and the surrounding region in the second fortnight of October 2026. With winds blowing mostly from the southeast or southwest, smoke haze was transported to Singapore and air quality reached “Unhealthy” levels for seven days and “Very Unhealthy” levels for three days between 16 to 28 October 2026.

6.       Localised short-duration thundery showers fell over parts of the island on several days during the second fortnight of October 2026. There were also a few days on which widespread moderate to heavy thundery showers affected Singapore. On 21 October 2026, heavy thundery showers fell over western Singapore during the afternoon, with the highest daily total rainfall for the second fortnight recorded at Tuas South at 81.0mm.

7.       Daily maximum temperatures exceeded 34 degrees Celsius on most days. The highest daily maximum temperature of 36.1 degrees Celsius was recorded at Woodlands on 23 October 2026.

8.       Most parts of Singapore recorded below average rainfall in the second fortnight of October 2026. The area around Tanjong Katong registered rainfall of 72 per cent below average, and the area around Punggol registered rainfall of 24 per cent above average. 

CLIMATE STATION STATISTICS

  Long-term Statistics for November
  (Climatological reference period: 1991-2020)
Average daily maximum temperature: 31.2      °C
Average daily minimum temperature: 24.6 °C
Average monthly temperature: 27.2 °C
     
Average rainfall: 252.3 mm
Average number of rain days: 19  
 
Historical Extremes for November
  (Rainfall since 1869 and temperature since 1929)
Highest monthly mean daily maximum temperature: 32.3  °C (2019)
Lowest monthly mean daily minimum temperature: 22.4  °C (1933)
     
Highest monthly rainfall ever recorded:  521.5  mm (1874)
Lowest monthly rainfall ever recorded: 53.5  mm (1981)

 

METEOROLOGICAL SERVICE SINGAPORE
29 Oct 2026

~~ End ~~

For more information, please submit your enquiries electronically via the Online Feedback Form or myENV mobile application.