10-Day Outlook
Extended Singapore weather forecast
Official NEA 4-Day Forecast
Sunday
30 Aug 2026
🌦️
Thundery Showers
Monday
31 Aug 2026
🌦️
Thundery Showers
Tuesday
01 Sep 2026
🌦️
Thundery Showers
Wednesday
02 Sep 2026
🌦️
Windy
Extended Trend (Days 5–10)
Official forecasts beyond 4 days carry lower confidence. The extended outlook below uses climatology and the current monsoon phase as a guide. For authoritative guidance, follow the NEA 4-day forecast and the regional outlook.
Thu
10 Sep
⛅
25–32°
45% rain
Fri
11 Sep
⛅
25–32°
45% rain
Sat
12 Sep
⛅
25–32°
45% rain
Sun
13 Sep
⛅
25–32°
45% rain
Mon
14 Sep
⛅
25–32°
45% rain
Tue
15 Sep
⛅
25–32°
45% rain
Outlook Context: Monsoon Phase
Forecast confidence
Days 1–4: High. Days 5–7: Moderate. Days 8–10: Low (climatology-based).
Related Forecasts
The 10-day Singapore weather outlook
NEA issues an official 4-day forecast. Beyond four days, individual day forecasts become unreliable, but the overall trend (e.g. whether the next 10 days will be wetter or drier than normal) is still useful. This page combines the official 4-day forecast with a climatology-based outlook for days 5–10.
Why does forecast skill drop after 4 days?
The atmosphere is a chaotic system. Tiny errors in measuring today’s weather grow over time, so a forecast for tomorrow is highly accurate, but a forecast for 8 days out can be wrong in both timing and detail. By 10 days out, we are closer to a climatological average than a real forecast. That’s why we mark the extended outlook as low confidence.
How to read the 10-day outlook
- Days 1–4: treat as authoritative (NEA 4-day forecast)
- Days 5–7: useful for general planning, not for timing specific events
- Days 8–10: a general sense of the weather pattern, not a precise forecast
- Always cross-check with the live rain radar on the day
NEA Weather SG republishes guidance based on publicly available data from NEA and the Meteorological Service Singapore. We are not affiliated with NEA.