Singapore, 17 March 2025 – The prevailing Northeast Monsoon conditions are expected to continue in the second fortnight of March 2025, with winds blowing mainly from the northwest or northeast.
2 Between 19 – 21 March 2025, a surge of north-easterly winds (or monsoon surge[1]) is expected over the South China Sea. The surge could bring windy and cooler conditions with periods of moderate to heavy 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 March 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 during the monsoon surge. Subsequently, daily temperatures may 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 – 16 MARCH 2025)
5 In the first fortnight of March 2025, Northeast Monsoon conditions prevailed over Singapore and the surrounding region. The winds blew from the north or northeast.
6 Thundery showers fell over parts of the island in the afternoon on most days in the first half of March 2025. The showers extended into the evening on a few occasions. On 8 March 2025, strong solar heating of land areas coupled with localised convergence of winds brought moderate to heavy thundery showers over many parts of Singapore in the afternoon. The daily total rainfall of 72.8mm recorded around Kranji area that day was the highest rainfall recorded for the first half of March 2025.
7 In the first half of March 2025, the daily maximum temperature ranged between 28.2 degrees Celsius and 35.1 degrees Celsius. There were six days when the daily maximum temperature reached 34 degrees Celsius or more. The highest daily maximum temperature of 35.1 degree Celsius was recorded at Newton on 4 March 2025.
8 Most parts of Singapore recorded below average rainfall in the first half of March 2025. Somerset registered rainfall of 69 per cent below average, and Kranji registered rainfall of 76 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 March (Climatological reference period: 1991-2020) |
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|---|---|---|
| Average daily maximum temperature: | 32.2 | °C |
| Average daily minimum temperature: | 24.9 | °C |
| Average monthly temperature: | 27.8 | °C |
| Average rainfall: | 151.7 | mm |
| Average number of rain days: | 12 | |
| Historical Extremes for March (Rainfall since 1869 and temperature since 1929) |
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| Highest monthly mean daily maximum temperature: | 34.1 | °C (1998) |
| Lowest monthly mean daily minimum temperature: | 22.1 | °C (1934) |
| Highest monthly rainfall ever recorded: | 528.3 | mm (1913) |
| Lowest monthly rainfall ever recorded: | 6.2 | mm (2016) |
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