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Warm Days With Thundery Showers Expected For The First Half Of April 2022

01 Apr 2022

Singapore, 1 April 2022 – Inter-monsoon conditions with warm weather and afternoon thundery showers are expected to continue into the first fortnight of April 2022. The monsoon rain band is forecast to lie close to the equatorial region and bring more showers to Singapore.  

2          During the inter-monsoon period, the prevailing winds are typically light and variable in direction. Warm weather with moderate to heavy thundery showers commonly occur in the afternoon. Climatologically, April is one of the warmest months of the year, with a high incidence of lightning activity.

3          In the first half of April 2022, short-duration thundery showers are expected in the afternoon and evening on most days due to strong solar heating of land areas. On some days, the thundery showers may be intense, due to the convergence of prevailing winds around Singapore. On a few days when prevailing winds shift to blow from the west, the eastward passage of Sumatra squalls from Sumatra or the Strait of Malacca could bring widespread thundery showers with gusty winds over Singapore in the morning. Overall, the rainfall for April 2022 is expected to be near average over most parts of Singapore.

4          Warm conditions are expected in the coming fortnight. The daily temperature is forecast to range between 24 degrees Celsius and 34 degrees Celsius on most days. The daily maximum temperature may reach 35 degrees Celsius or higher on days with less clouds in the sky.

5          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 – 31 March 2022)          

 6          Northeast Monsoon conditions prevailed over Singapore and the surrounding region in the first half of March 2022, with the low-level winds generally blowing from the northwest or northeast.   With the weakening of the winds in the second half of the month, inter-monsoon conditions were observed to prevail. On a few days during this time, the winds blew from the west.

7          In March 2022, thundery showers fell over the island mainly in the afternoon and evening. There were also thundery showers in the pre-dawn hours and morning on a few days. On 7 March 2022, strong solar heating of land areas coupled with convergence of winds over Singapore triggered moderate to heavy thundery showers in the afternoon. The heaviest rainfall was over the southern and western parts of Singapore. The daily total rainfall of 134.2 mm registered at Jurong West, was the highest daily total rainfall for March 2022. This was ranked the second wettest day recorded in March in the past 10 years. The highest daily rainfall in the past 10 years was 151.5 mm recorded at Jurong West on 23 March 2021.

8          March 2022 was a warm month. Strong solar heating of land areas coupled with light wind conditions resulted in warm temperatures on most days. Out of the 19 days when the daily maximum temperature reached 34 degrees Celsius or more, there were seven days where temperature soared to 35 degrees Celsius or higher. On 19 March 2022, the highest daily maximum temperature of 36.2 degrees Celsius was recorded at Ang Mo Kio. The daily minimum temperature dipped to a low of 21.8 degrees Celsius at Pulau Ubin on 21 March 2022 and at Admiralty on 31 March 2022.

9          Many parts of Singapore received above average rainfall in March 2022. The rainfall recorded at Yio Chu Kang was 109 per cent above average. The rainfall at Tuas was 42 per cent below average.

 

FWO 1 Apr

 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)

 

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