Singapore, 16 December 2025 – The prevailing Northeast Monsoon conditions are expected to continue in the second fortnight of December 2025, with winds blowing mainly from the northwest or northeast.
2 The current wet weather is likely to continue for the rest of December 2025. Thundery showers are expected in the afternoon on most days, extending into the evening on some days. The showers could be widespread and heavy on a few of these days. The total rainfall for the second fortnight of December 2025 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.
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 (1 – 15 DECEMBER 2025)
5 Northeast Monsoon conditions prevailed over Singapore and the surrounding region in the first fortnight of December 2025. During this time, the low-level winds blew mainly from the northwest or northeast.
6 Moderate to heavy thundery showers fell over parts of Singapore on most afternoons. The showers extended into the evening on a few days. On 4 December 2025, heavy thundery showers affected many areas of the island in the afternoon, with the most intense rainfall over the western part of Singapore. The daily total rainfall of 134.2 mm recorded at Jurong West that day was the highest rainfall recorded for the first fortnight of December 2025.
7 The daily maximum temperatures in the first fortnight of December 2025 were between 32 degrees Celsius and 34 degrees Celsius on most days. The highest daily maximum temperature of 34.5 degree Celsius was recorded at Newton on 5 December 2025.
8 Most parts of Singapore recorded above average rainfall in the first fortnight of December 2025. The area around Jurong Pier registered rainfall of 175 per cent above average, and the area around MacRitchie Reservoir registered rainfall of 7 per cent below average.
CLIMATE STATION STATISTICS
Long-term Statistics for December
(Climatological reference period: 1991 – 2020)
| Average daily maximum temperature: | 30.5 °C |
| Average daily minimum temperature: | 24.3 °C |
| Average monthly temperature: | 26.8 °C |
| Average rainfall: | 331.9 mm |
| Average number of rain days: | 19 |
Historical Extremes for December
(Rainfall since 1869 and temperature since 1929)
| Highest monthly mean daily maximum temperature: | 31.6 °C (2016, 2018) |
| Lowest monthly mean daily minimum temperature: | 21.9 °C (1933) |
| Highest monthly rainfall ever recorded: | 765.9 mm (2006) |
| Lowest monthly rainfall ever recorded: | 62.5 mm (1932) |