Expect short thundery showers on most days for rest of August, says weather service

Short-duration thundery showers are expected over parts of the island between the late morning and afternoon on most days for the rest of August, said the Meteorological Service Singapore (MSS) on Aug 15.

In its fortnightly weather outlook, MSS said prevailing south-west monsoon conditions will continue in the second half of the month, with low-level winds blowing from the south-east or south-west.

On a few days, the passage of Sumatra squalls may bring widespread thundery showers and gusty winds between the pre-dawn and morning. Rainfall for the second fortnight of August is likely to be near average over most parts of Singapore.

Daily maximum temperatures are forecast to range between 32 deg C and 34 deg C on most days, with a few warm and humid nights when temperatures may remain above 28 deg C.

Reviewing the first half of August, MSS said short-duration thundery showers occurred over parts of the island on most afternoons. On several days, Sumatra squalls brought widespread thundery showers and gusty winds in the pre-dawn and morning.

The highest daily total rainfall for the fortnight was 78.6mm, recorded in Pasir Laba on Aug 13 following widespread showers from a Sumatra squall.

The first half of the month also saw several warm days, with the highest daily maximum temperature of 35.8 deg C recorded in Paya Lebar on Aug 2.

This broke the record for the highest daily maximum temperature for August, surpassing the previous high of 35.4 deg C recorded in Seletar in 2016 and Admiralty in 2020.

Rainfall in the first fortnight was above average in some areas, with Jurong receiving 80 per cent more rain than usual, while Somerset saw 49 per cent below-average rainfall.