Weather around Singapore
Singapore is 50 km across. The weather that hits it is not. Squalls form over Sumatra. Surge rain arrives from the South China Sea. Haze is someone else's fire, on our wind. This page is the regional picture, not a grid of invented city temperatures.
Meteorological Service Singapore still publishes a regional and world forecast on nea.gov.sg. We do not scrape those city numbers into a fake live board.
Live tools that actually show the region
How a Sumatra squall crosses the island
A line of storms that forms over Sumatra, then rides southwest monsoon flow across the Strait. Typical window is 2am to 10am, June to September.
1. Strait
Watch 240 km radar
A solid line west of Tuas is the tell. The 50 km view is still empty at this point.
2. West
Tuas, Jurong, Choa Chu Kang
First landfall. Wind jump, brief heavy rain, then it keeps moving.
3. Central
Bukit Timah, Toa Payoh, City
Often 30 to 60 minutes after the west. Not every line still has punch here.
4. East
Tampines, Bedok, Changi
Last to arrive, often weaker. Some squalls die over the catchment before they get here.
Singapore weather year
Four phases, not four seasons. Temperature barely moves. Rain type does.
Systems that change our weather
Northeast monsoon
December to March
Winds from the northeast. Wet then dry. A typhoon near the Philippines can enhance or steal moisture. Surge rain is the December story.
Southwest monsoon
June to September
Winds from the southwest. Drier overall, morning squalls, and the traditional haze window when fires burn upwind.
Madden-Julian Oscillation
A pulse of rain and cloud that circles the tropics every 30 to 60 days. When the wet phase is over the Maritime Continent, Singapore's storm days cluster. When the dry phase is here, even November can run quieter than the climate table.
El Niño and La Niña
El Niño years tend to be drier here and worse for haze. La Niña years tend to be wetter. That is a seasonal tilt, not a forecast for Thursday. MSS seasonal outlooks are the right place for the current phase.
How far a Singapore forecast can reach
Day-by-day skill is high for tomorrow, useful out to four days, and mostly climate after that. Pair the 24-hour forecast and nowcast with radar. The 10-day page is honest about the drop-off.