SINGAPORE — The warm and wet weather in April is expected to continue into the first two weeks of May, with short-duration thundery showers forecasted on most afternoons.

The Meteorological Service Singapore (MSS) said in a weather update on Friday (April 30) that the afternoon showers may extend into the evening on a few of the days in the first half of May.

The showers are due to the strong daytime heating of the land areas, coupled with the convergence of winds over Singapore and the surrounding vicinity.

There is also the presence of the monsoon rain band, which is close to the equatorial Southeast Asia region, contributing to the showers.

The daily temperature for the first two weeks of May is forecast to range between 24°C and 34°C, with “warm conditions expected on most days”, the agency said.

“The daily maximum temperature could reach around 35°C on a few days, particularly when there are few clouds in the sky.

“Warm nights can be expected with night-time temperatures of up to 28°C on a few days, mostly over the southern and eastern coastal areas of the island when prevailing winds blowing from the east or southeast bring in warm and humid air from the seas.”

At the same time, the prevailing inter-monsoon conditions over the island are expected to persist into the month.

“In the first half of May, the low-level winds are forecast to be light and variable in direction and may strengthen to blow from the southwest or west on some days,” the MSS said.

The convergence of low-level winds blowing from the southwest and west may trigger the development of Sumatra squalls over the Strait of Malacca.

The eastward passage of the squall toward the South China Sea is expected to bring widespread thundery showers and gusty winds over Singapore on a few days between the pre-dawn hours and morning.

Overall, the rainfall in the first half of May is expected to be above average over most parts of Singapore.

Last month, the MSS said that the influence of Typhoon Surigae over the Western Pacific Ocean triggered the development of a Sumatra squall over the Strait of Malacca in the morning of April 17.

Flash floods occurred in Singapore over the April 17 weekend.

The daily total rainfall of 170.6mm recorded at Ulu Pandan that day was the highest rainfall recorded for April.

“It is also the record highest rainfall in a day for April since 1980, surpassing the previous record of 159.9mm set in 2007,” MSS said.

For the daily weather forecast, the public may visit the websites of MSS or the National Environment Agency. They may also download the myENV mobile application or the Weather@SG app by MSS.