Forecast

WEATHER OUTLOOK (2 – 15 JUNE 2025)

1   Winds over Singapore are forecast to strengthen and blow from the southeast or southwest in early June 2025, as the Southwest Monsoon sets in over the region. The Southwest Monsoon season typically extends into September and is generally a drier season compared to other times of the year.

2   In the first fortnight of June 2025, localised short-duration thundery showers are expected over parts of the island in the late morning and afternoon on some days. In addition, Sumatra squalls may bring widespread thundery showers and gusty winds in the pre-dawn and morning on a few days. The total rainfall for the first fortnight of June 2025 is forecast to be near average over most parts of the island.

3   The daily maximum temperatures are likely to be around 34 degrees Celsius on most days and reach 35 degrees Celsius on a few days. The nights are likely to be warm and humid. On several nights, the temperatures may stay above 29 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 OF THE PAST TWO WEEKS (16 – 31 MAY 2025)

5  Inter-monsoon conditions prevailed over Singapore and the surrounding region with winds generally light and variable in direction.

6  Localised short-duration thundery showers fell over parts of the island on several days in the second fortnight of May 2025. On 18 May 2025, the passage of a Sumatra squall brought widespread thundery showers over Singapore in the late morning and early afternoon. The daily total rainfall of 78.6 mm recorded at Sembawang that day was the highest rainfall recorded for the second fortnight of May 2025.

7  The second fortnight of May 2025 was warm, with daily maximum temperatures registering above 35 degrees Celsius on several days. The highest daily maximum temperature of 36.2 degree Celsius was recorded at Paya Lebar on 24 May 2025.

8   Singapore recorded below average rainfall in the second fortnight of May 2025. The rainfall around Simei was about 63 per cent below average.

CLIMATE STATION STATISTICS

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

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