Singapore, 14 Apr 2022 – The prevailing inter-monsoon conditions over Singapore and the surrounding region are expected to persist through May 2022. In the coming fortnight, the prevailing winds are forecast to be generally light and variable and occasionally blow from the southwest or west.
2 In the early part of the coming fortnight, the convergence of prevailing winds from the southwest or west may lead to the development of Sumatra squalls over the Strait of Malacca. As the squalls move eastwards toward the South China Sea, they may bring widespread thundery showers and gusty winds over Singapore during the pre-dawn hours and morning on a few days.
3 Short-duration moderate to heavy thundery showers with frequent lightning are expected over parts of the island in the afternoon on most days. On a few of these days, the thundery showers may be intense, and could extend into the early evening. The rainfall for April 2022 is expected to be below average over most parts of Singapore.
4 For the rest of April 2022, warm weather can still be expected. The daily maximum temperatures are expected to be around 34 degrees Celsius on most days. On one or two rainy days, the daily minimum temperature may drop to a low of around 23 degrees Celsius.
5 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 (1 – 13 April 2022)
6 Inter-monsoon conditions prevailed over Singapore and the surrounding region in the first half of April 2022. The prevailing winds were generally light and blew mainly from the southwest or northwest.
7 In the first half of April 2022, thundery showers fell over parts of the island mainly in the late morning and afternoon. These showers were mostly localised and of short-duration. The highest daily total rainfall of 70.2mm was recorded at Punggol on 6 April 2022. The passage of Sumatra squalls also brought showers and strong winds to the coastal areas of western Singapore between the early hours and morning on a few days. The highest wind gust of 67km/h was recorded at Pasir Panjang on 9 April 2022.
8 In the first fortnight of April 2022, there were five days when the daily maximum temperature reached 34 degrees Celsius or more. In particular, the daily maximum temperatures soared to 36.8 degrees Celsius and 35.4 degrees Celsius at Admiralty and Ang Mo Kio respectively under clear sky conditions. The lowest minimum temperature was 22.2 degrees Celsius recorded at Admiralty on 9 April 2022.
9 The rainfall was well below average over many parts of Singapore in the first half of April 2022. The rainfall recorded at Punggol was 22 per cent above average. The rainfall at Jurong West was 87 per cent below average.
CLIMATE STATION STATISTICS
Long-term Statistics for April
(Climatological reference period: 1991 – 2020)
| Average daily maximum temperature: | 32.4 °C |
| Average daily minimum temperature: | 25.3 °C |
| Average monthly temperature: | 28.2 °C |
| Average rainfall: | 164.3 mm |
| Average number of rain days: | 15 |
Historical Extremes for April
(Rainfall since 1869 and temperature since 1929)
| Highest monthly mean daily maximum temperature: | 33.9 °C (1983) |
| Lowest monthly mean daily minimum temperature: | 23.1 °C (1934) |
| Highest monthly rainfall ever recorded: | 454.9 mm (1900) |
| Lowest monthly rainfall ever recorded: | 16.6 mm (1977) |