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Wet Weather To Continue With The Onset Of The Northeast Monsoon

01 Dec 2023

Singapore, 1 December 2023 – The Northeast Monsoon is expected to become established over Singapore and the surrounding region during the coming fortnight, with the winds strengthening and blowing mostly from the northwest and northeast.

2        The current wet weather is likely to continue, with thundery showers expected over parts of the island on most afternoons. The showers may extend into the night on a few days. The total rainfall for the first half of December 2023 is forecast to be above average over most parts of the island.

3        During the fortnight, the daily temperature is forecast to range between 24 degrees Celsius and 33 degrees Celsius on most days. Although thundery showers are expected on most days, the daily maximum temperature may reach around 34 degrees Celsius on a few 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 (16 – 30 November 2023)

5        Inter-monsoon conditions prevailed over Singapore and the surrounding region in the second half of November 2023, with low-level winds generally light and variable in direction.

6        In the second fortnight of November 2023, the monsoon rain band was located over the equatorial Southeast Asia region which brought wet weather over Singapore. Thundery showers fell over parts of the island in the afternoon on most days. The showers extended into the night on a few of these days. On 21 November 2023, widespread moderate to heavy thundery showers fell over many parts of Singapore in the afternoon. The daily total rainfall of 128.8mm recorded at Bedok that day was the highest rainfall recorded for the second half of November 2023.

7        The daily maximum temperatures in the second fortnight of November 2023 was above 33 degrees Celsius on most days. The highest daily maximum temperature of 35.3 degree Celsius was recorded at Clementi on 17 November 2023.

8        Most parts of the island recorded above average rainfall in the second fortnight of November 2023. Ulu Pandan recorded rainfall of 119 percent above average, and Admiralty recorded rainfall of 17 percent below average.

FWO 1 Dec 2023

CLIMATE STATION STATISTICS

Long-term Statistics for December

(Climatological reference period: 1991-2020)

Average daily maximum temperature:

30.5

°C

Average daily minimum temperature:

24.3

°C

Average monthly temperature:

26.8

°C

 

 

 

Average rainfall:

331.9

mm

Average number of rain days:

19

 

 

Historical Extremes for December

(Rainfall since 1869 and temperature since 1929)

Highest monthly mean daily maximum temperature:

31.6

°C (2016, 2018)

Lowest monthly mean daily minimum temperature:

21.9

°C (1933)

 

 

 

Highest monthly rainfall ever recorded:

765.9

mm (2006)

Lowest monthly rainfall ever recorded:

62.5

mm (1932)


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