Singapore, 16 January 2025 – The prevailing Northeast Monsoon conditions are expected to continue in the second fortnight of January 2025, with winds blowing mainly from the northwest or northeast.
2 Between 17 – 19 January 2025, a surge of north-easterly winds (or monsoon surge[1]) is expected over the South China Sea. This may bring windy and cooler conditions with occasional spells of moderate to heavy thundery showers over Singapore and the surrounding vicinity. For the rest of the fortnight, short-duration thundery showers are forecast in the afternoon on most days. Overall, the rainfall for the second half of January 2025 is expected to be above average over most parts of the island.
3 Lower daily minimum temperatures of around 22 degrees Celsius can be expected in the first few days of the fortnight. Subsequently, daily temperatures are forecast to range between 24 degrees Celsius and 34 degrees Celsius on most days.
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 (1 – 15 JANUARY 2025)
5 Northeast Monsoon conditions prevailed over Singapore and the surrounding region in the first fortnight of January 2025. During the period, the low-level winds blew mainly from the north or northeast.
6 A strengthening of the high-pressure system over northern continental Asia brought a surge of moderate to strong northeast monsoon winds over the South China Sea on several days of January 2025. The surge brought cool and wet weather over Singapore between 10 and 13 January 2025. The daily total rainfall of 241.8mm recorded at Pulau Tekong on 10 January 2025 was the highest daily total rainfall ever recorded in January, exceeding the previous record of 238.2mm on 30 January 2011.
7 The daily temperature in the first fortnight of January 2025 ranged from 21.6 degrees Celsius to 34.3 degrees Celsius. The highest daily maximum temperature of 34.3 degrees Celsius was recorded on 5 January 2025 at Jurong. During the monsoon surge event between 10 and 13 January 2025, there were three days where the highest daily maximum temperature was below 28 degrees Celsius. On 11 January 2025, the highest daily maximum temperature was 25.7 degrees Celsius recorded at East Coast Parkway and the daily minimum temperature at Newton dipped to 21.6 degrees Celsius, the lowest temperature for the first fortnight of January 2025.
8 Well-above average rainfall was received across the island in the first fortnight of January 2025. The highest anomaly of 345 per cent above average was at Kent Ridge. The anomaly was lowest at Tengah at 185 per cent above average.
[1] A monsoon surge refers to a strengthening of winds over the South China Sea, causing extensive rainclouds to form over our surrounding region.
CLIMATE STATION STATISTICS
| Long-term Statistics for January (Climatological reference period: 1991-2020) |
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|---|---|---|
| Average daily maximum temperature: | 30.6 | °C |
| Average daily minimum temperature: | 24.3 | °C |
| Average monthly temperature: | 26.8 | °C |
| Average rainfall: | 221.6 | mm |
| Average number of rain days: | 13 | |
| Historical Extremes for January (Rainfall since 1869 and temperature since 1929) |
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| Highest monthly mean daily maximum temperature: | 31.8 | °C (2016, 2018) |
| Lowest monthly mean daily minimum temperature: | 21.6 | °C (1933) |
| Highest monthly rainfall ever recorded: | 818.6 | mm (2006) |
| Lowest monthly rainfall ever recorded: | 15.4 | mm (1932) |
METEOROLOGICAL SERVICE SINGAPORE
16 Jan 2025
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