Singapore, 16 August 2022 – More thundery showers are expected in the second half of August 2022, compared to the first half of the month. The prevailing Southwest Monsoon conditions are forecast to persist over Singapore and the surrounding region with the low-level winds to continue blowing from the southeast or southwest.
2 On most days over the next two weeks, short-duration moderate to heavy thundery showers can be expected between the late morning and afternoon. Convergence of winds in the surrounding vicinity could bring thundery showers over the island on a few nights. In addition, Sumatra squalls may bring widespread thundery showers with occasional gusty winds in the pre-dawn and morning on a few days. Overall, more rainfall is expected in the second half of August 2022 compared to the first half of the month. The overall rainfall for August 2022 will likely be above-average over most parts of the island.
3 While more showers are expected in the coming fortnight, there could still be a few warm days with daily highs of around 34 degrees Celsius. On most days, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius. On a few rainy days, the daily minimum temperature may dip to below 23 degrees Celsius. Warm and humid night with minimum night-time temperatures of up to 28 degrees Celsius can be expected on some days, particularly in the eastern and southern coastal areas when prevailing winds blowing from the southeast bring warm, humid air from the surrounding seas.
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 (1 – 15 August 2022)
5 In the first fortnight of August 2022, Southwest Monsoon conditions prevailed over Singapore and the surrounding region. During the period, the low-level winds blew from the southeast or southwest. There were some days when the winds over Singapore and the surrounding region strengthened to blow from the west due to the influence of tropical storms over the South China Sea and north-western Pacific Ocean.
6 In the first two weeks of August 2022, the monsoon rain band was mostly situated over the northern Southeast Asia region, resulting in less wet weather over equatorial Southeast Asia including Singapore. There were however several days where thundery showers fell over parts of the island mainly in the late morning and afternoon. These showers were mostly localised and of short-duration. On the afternoon of 2 August 2022, large-scale convergence of winds over Singapore and the surrounding region led to the development of moderate to heavy thundery showers over many areas of the island. The showers were particularly intense over the western and northern parts of Singapore. The daily total rainfall of 78.6 mm recorded at Kranji was the highest daily total rainfall recorded in the first half of August 2022.
7 During the first half of August 2022, the daily maximum temperature ranged from 29.5 degrees Celsius to 35.1 degrees Celsius. There were a few dry and warm days where the daily maximum temperature exceeded 34 degrees Celsius. The highest daily maximum temperature of 35.1 degrees Celsius was recorded at Marina Barrage on 11 August 2022. On a few nights during the period, the daily minimum temperature over the southern, eastern and western coastal areas of the island were above 28°C.
8 In the first fortnight of August 2022, the western half of Singapore received above-average rainfall, while the eastern half of the island received below-average rainfall. The rainfall recorded at Jurong was 105 percent above-average while that recorded at Tanjong Katong was 83 percent below-average.
CLIMATE STATION STATISTICS
Long-term Statistics for August
(Climatological reference period: 1991 – 2020)
| Average daily maximum temperature: |
31.4 °C |
| Average daily minimum temperature: |
25.3 °C |
| Average monthly temperature: |
28.1 °C |
| Average rainfall: |
146.9 mm |
| Average number of rain days: |
14 |
Historical Extremes for August
(Rainfall since 1869 and temperature since 1929)
| Highest monthly mean daily maximum temperature: |
32.7 °C (2019) |
| Lowest monthly mean daily minimum temperature: |
23.0 °C (1962) |
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| Highest monthly rainfall ever recorded: |
526.8 mm (1878) |
| Lowest monthly rainfall ever recorded: |
11.8 mm (2019) |
