Singapore can expect thundery showers on most days in the first half of April, particularly in the afternoons, according to the Meteorological Service Singapore (MSS).
The agency said on Wednesday, April 1, that the residents may experience heavy showers that could extend into the evening on some days, as weather conditions across the island turn more unsettled.
Weather officials have also warned of possible Sumatra squalls, the lines of thunderstorms that typically form over Sumatra or the Strait of Malacca, which could bring widespread rain and gusty winds on one or two mornings during this period.
Despite the anticipated rain, temperatures are expected to remain warm. Daily highs will generally range between 33°C and 35°C, with the possibility of exceeding 35°C on days with less cloud cover.
Rainfall levels across the island are forecast to be near average overall. However, the first half of April is expected to be wetter than the previous fortnight, which saw lighter winds and only brief afternoon showers in some areas.
The changing weather pattern is attributed to the gradual end of the north-east monsoon, which has been in place since December 2025.
The inter-monsoon conditions are expected to set in during the first week of April. This seasonal transition is typically characterised by light, variable winds and increased lightning activity, and usually continues through May.
Parts of southern and western Singapore experienced thundery showers on March 17 and 18, with Tuas South and Lim Chu Kang recording the highest rainfall totals for the second half of the month at 58.4mm. Still, much of the island saw below-average rainfall overall, accompanied by several hot days where temperatures climbed above 34°C.
The highest temperature recorded during that period was 35.4°C in Sembawang on March 30, underscoring the recent spell of warm and relatively dry weather before April's expected shift.
