Singapore, 31 January 2022 – With the monsoon rain band forecast to lie closer to the equatorial Southeast Asia region, more thundery showers can be expected in the first fortnight of February 2022, compared to the second fortnight of January 2022. The prevailing Northeast Monsoon conditions are expected to persist in the first half of February 2022, with low-level winds blowing from the northwest or northeast.

2          On the first few days of the forecast period, a mass of dry air over the equatorial Southeast Asia region may bring stable atmospheric conditions and generally fair and warm weather over most parts of Singapore. Thereafter, the monsoon rain band is forecast to migrate closer to the Equator. Thundery showers may be expected over parts of the island in the afternoon on most days with the showers extending into the evening on a few of these days. On a few days during the fortnight, widespread moderate to heavy thundery showers induced by large-scale convergence of winds over Singapore and the surrounding region may also be expected. Overall, the rainfall for the first half of February 2022 is forecast to be above-average over most parts of the island.

3          While more showers are expected in the first fortnight of February, the daily maximum temperature could still reach a high of around 34 degrees Celsius on a few days. On most days, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius.

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 (1 – 30 January 2022)

5          Northeast Monsoon conditions prevailed over Singapore and the surrounding region in January 2022. The prevailing low-level winds blew from the north or northeast.

6         A high-pressure system over northern continental Asia brought a surge of moderate to strong northeast monsoon winds (monsoon surge[1]) over the equatorial South China Sea region in the first few days of 2022. The surge brought cool and wet weather over Singapore between 31 December 2021 and 2 January 2022. On 2 January 2022, widespread and continuous moderate rain fell over the island between the pre-dawn hours and afternoon. A total of 101.2mm of rainfall was recorded at Lower Peirce Reservoir on that day. This is the highest daily total rainfall for January 2022. After a wet start to the new year of 2022, it was dry and warm on most days with a few days of short-duration showers. There were also occasionally windy conditions on several days.

7          The daily temperature in January 2022 ranged from 22.5 degrees Celsius to 35.4 degrees Celsius. The highest daily maximum temperature of 35.4 degrees Celsius was recorded on 29 January 2022 at Newton. The minimum temperature of 22.5 degrees Celsius, recorded at Pasir Panjang on 20 January, was the lowest temperature recorded in January 2022.

8          Most parts of the island recorded below-average rainfall in January 2022. The highest anomaly of 57 per cent below-average was recorded at Simei. The rainfall recorded at Ang Mo Kio was 12 per cent above-average.

CLIMATE STATION STATISTICS

[1] A monsoon surge refers to a strengthening of winds over the South China Sea, causing extensive rainclouds to form over our surrounding region.

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