First 2 Weeks of May 2021 Will Still Be Rainy, Especially During the Afternoons


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Be sure to keep those umbrellas with you if you’re heading out for lunch – those heavy afternoon showers you experienced in April will likely persist into May… well, the first two weeks at least.

Don’t say we didn’t warn ya!

First 2 Weeks of May 2021 Will Still Be Rainy, Especially During the Afternoons

According to the Meteorological Service Singapore (MSS), the prevailing inter-monsoon conditions will continue into the first fortnight of May.

Note that the next monsoon season – the Southwest Monsoon Season – is slated to start in June and will end in September.

This means that we’ll continue to experience similar wet weather, which consists of short-duration thundery showers with frequent lightning activity, until mid-May.

Rainfall is expected to be higher than average over Singapore for the next two weeks.

These thundery showers will usually occur in the afternoon, though they may stretch into the evenings on some days.

These afternoon showers are often caused by strong daytime heating of the land areas coupled with warm temperatures and the convergence of light winds around the island.

Thunderstorms Expected 

There may also be a few days when winds may strengthen as they come in from the west or southwest.

This in turn will give rise to the formation of Sumatra squalls that will then bring on widespread thundery showers with gusty winds… you know, the sort that can upend your umbrella.

These squalls will likely hit the streets of the Red Dot during the predawn hours and morning.

Turn up… err… or “down” those aircons because it’s about to get hot at night as well!

The MCC warned of warm nights ahead with temperatures hitting 28°C on a few days, affecting mostly the southern and eastern coastal sides of the island.

A recap of April’s weather

Despite the flash flood on April 17 that caught many off-guard, April was generally warm, recording above 34°C on most days and over 35°C for at least 11 days.

Due to the warm temperatures and daytime heating, many parts of Singapore have had above-average rainfall throughout the month.

The few tropical storms, including the Typhoon Surigae, over the Western Pacific Ocean also contributed to the development of a Sumatra squall over the Strait of Malacca in April.


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The squall subsequently brought heavy thundery showers over Singapore, recording the highest rainfall for April (at 170.6mm) over at Ulu Pandan.

It also happened to be the highest recorded rainfall in a day for April since 1980, beating out the previous record of 159.9mm.

Featured Image: Christian Heinz / Shutterstock.com