Fortnightly Weather Outlook for 16 – 28 February 2021
WEATHER OUTLOOK (16 – 28 February 2021)
1 The Northeast Monsoon season is currently in its dry phase, which is characterised by drier weather and occasionally windy conditions. The dry phase is forecast to persist for the rest of February 2021 with prevailing winds blowing from the north or northeast.
2 The generally dry weather in the first fortnight of February 2021 is forecast to continue into the second fortnight of the month. Particularly in the first week of the coming fortnight, an intensification of a high-pressure system over central China is forecast to bring a mass of dry air accompanied with a strengthening of northeast winds over the South China Sea. As a result, stable atmospheric conditions are expected over Singapore and the surrounding region. During the week, generally fair weather with occasionally windy conditions are forecast for Singapore. There could be short-duration thundery showers in the afternoon over parts of the island on one or two days.
3 While generally fair weather is also forecast in the last week of the month, strong daytime heating of land areas coupled with a weakening of low-level winds are expected to bring short-duration thundery showers between the afternoon and early evening over parts of the island on a few days. Overall, the rainfall for February 2021 is expected to be below normal over most parts of the island.
4 For the rest of February 2021, the daily temperature is forecast to range between 24°C and 33°C on most days. In the latter half of the fortnight, the maximum temperature could reach a high of 34°C on a few days.
REVIEW (1 – 15 February 2021)
6 The dry phase of the Northeast Monsoon season prevailed over Singapore and the surrounding region in the first half of February 2021, with low-level winds blowing mostly from the north or northeast.
7 During the first fortnight of February 2021, the monsoon rain band was located south of the Equator and generally fair weather prevailed over Singapore. During the period, strong northeast winds over the South China Sea brought occasionally windy conditions and passing showers to Singapore. On a few days in the fortnight, sea breeze and opposing prevailing winds converged, which brought thunderstorms over the western and southern parts of the island in the late afternoon and evening.
8 In the first fortnight of February 2021, the highest daily maximum temperature of 34.2°C was recorded at Jurong Island on 7 February 2021. The lowest daily minimum temperature of 22.8°C was recorded at Sembawang on 5 February 2021. On most days, the daily temperature ranged between 23.5°C and 33.5°C.
9 In the first half of February 2021, rainfall was below average over many parts of the island. The highest rainfall anomaly of 98% below average was recorded at Changi, while highest rainfall anomaly of 68% above average was recorded at Sentosa.
CLIMATE STATION STATISTICS
Long-term Statistics for February
(Climatological reference period: 1981 – 2010)
|Average daily maximum temperature||31.7 °C|
|Average daily minimum temperature||24.3 °C|
|Average monthly temperature||27.1 °C|
|Average rainfall||112.8 mm|
|Average number of rain days||8|
Historical Extremes for February
(Rainfall since 1869 and temperature since 1929)
|Highest monthly mean daily maximum temperature:||33.5 °C (2010)|
|Lowest monthly mean daily minimum temperature:||21.6 °C (1930,1934)|
|Highest monthly rainfall ever recorded:||566.7 mm (1910)|
|Lowest monthly rainfall ever recorded:||0.2 mm (2014)|