16 September 2026 – More showers are expected in the second half of September 2026 compared to the first half of the month. Southwest Monsoon conditions are prevailing over Singapore and the surrounding region and are expected to continue in the coming fortnight, with winds blowing mainly from the southeast or southwest.

2            In the second fortnight of September 2026, localised short-duration thundery showers are expected between the late morning and afternoon over parts of the island on most days. On one or two days, regional convergence of winds may bring widespread moderate to heavy thundery showers over Singapore. Overall, the total rainfall for the second fortnight of September 2026 is forecast to be near the long-term average across most parts of the island.

3            For the rest of September 2026, the daily maximum temperatures are likely to range between 33 degrees Celsius and 34 degrees Celsius on most days and could reach around 35 degrees Celsius on a few days. Warm and humid conditions can still be expected on some nights with minimum temperatures remaining above 27 degrees Celsius.

4            For updates of the daily weather forecast, please visit the MSS website (www.weather.gov.sg) or download the myENV app. Since 4 September 2026, NEA has commenced issuance of the Daily Haze Advisories (DHA). Please refer to the DHA for the latest update of the haze situation.

REVIEW OF THE PAST TWO WEEKS (1 – 15 September 2026)

 5            Southwest Monsoon conditions prevailed over Singapore and the surrounding region in the first half of September 2026, with winds blowing mostly from the southeast or southwest.

6            The first half of September 2026 was mostly dry, with brief thundery showers occurring over parts of the island on some days. On 11 September 2026, regional wind convergence brought moderate to heavy thundery showers over many parts of Singapore during the late morning and afternoon. The daily total rainfall of 105mm recorded around Scotts Road area that day was the highest rainfall recorded for the first half of September 2026.

7         In the first half of September 2026, daily maximum temperatures exceeded 34 degrees Celsius on 12 occasions. The highest temperature of 35.3 degrees Celsius was recorded at Sembawang on 9 September 2026. Nights remained warm, with minimum temperatures staying above 27 degrees Celsius across many parts of the island.

8         Singapore recorded well below average rainfall in the first half of September 2026. The area around Changi registered rainfall of about 98 per cent below average.

CLIMATE STATION STATISTICS

METEOROLOGICAL SERVICE SINGAPORE

16 Sep 2026