Climate at a glance · Colombo
Annual mean27°day and night
Precipitation3099 mma year
Warmest monthFebruaryavg high 31°
Coldest monthJanuaryavg low 23°
Average temperature by month
High · lowJanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation by month
3099 mm a yearJanFebMarAprMayJunJulAugSepOctNovDec
Monthly averages
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high | 30° | 31° | 31° | 31° | 30° | 29° | 29° | 29° | 29° | 29° | 29° | 30° |
| Avg low | 23° | 23° | 24° | 24° | 25° | 25° | 25° | 25° | 25° | 24° | 23° | 23° |
| Precip, mm | 172 | 46 | 120 | 162 | 436 | 314 | 253 | 249 | 313 | 395 | 447 | 192 |
| Wet days | 18 | 11 | 20 | 24 | 30 | 29 | 27 | 28 | 29 | 28 | 25 | 20 |
| Sunshine | 9.2 h | 11 h | 10.5 h | 10.1 h | 8.4 h | 9.5 h | 9.7 h | 9.7 h | 9.1 h | 8 h | 7.5 h | 9.2 h |
| Humidity | 82% | 77% | 81% | 83% | 85% | 85% | 85% | 85% | 85% | 87% | 87% | 84% |
| Sea temperature | 28° | 29° | 30° | 31° | 30° | 29° | 29° | 28° | 29° | 29° | 29° | 29° |
| Daylight | 11 h 46 | 11 h 54 | 12 h 05 | 12 h 17 | 12 h 26 | 12 h 31 | 12 h 29 | 12 h 20 | 12 h 09 | 11 h 58 | 11 h 48 | 11 h 44 |
| UV index (clear sky) | 9 | 11 | 12 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 10 | 9 |
5-year averages (2021–2025) · Open-Meteo historical weather (ERA5)
6.9270°N, 79.8610°E