Singapore entered the inter-monsoon period in mid-August, bringing a mix of warm mornings and sudden afternoon downpours. Forecasters expect this pattern to continue until early September, with the heaviest rain usually between 14:00 and 18:00.
Neighbourhoods west of the island may see slightly higher rainfall totals on days when Sumatra squalls develop. East Coast Park organisers and school sports coordinators have been advised to keep portable shelters on standby for outdoor events.
What to plan for
Commuters should carry compact umbrellas even when mornings look clear. Flash floods at low-lying junctions typically drain within thirty minutes, but motorists should avoid driving through standing water.
Construction sites must secure loose hoardings and netting before predicted thunderstorm windows. Town councils will post drainage checks in areas that reported ponding during last month's storms.