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Colombo Weather by Month
Average temperatures, rainfall and humidity for Colombo, Sri Lanka, month by month, built from OpenWeather's historical records. Use it to see what a typical Colombo month looks like before you travel — then check the live Colombo forecast for the days ahead.
Warmest month
February
32°C average high
Coolest month
January
23°C average low
Wettest month
May
113 mm of rain
Driest month
February
23 mm of rain
Average temperature and rainfall in Colombo by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 31°C | 23°C | 18°C / 36°C | 29 mm | 77% | 15 km/h |
| February | 32°C | 23°C | 19°C / 37°C | 23 mm | 75% | 13 km/h |
| March | 32°C | 24°C | 20°C / 36°C | 47 mm | 76% | 10 km/h |
| April | 32°C | 25°C | 22°C / 35°C | 63 mm | 78% | 10 km/h |
| May | 31°C | 26°C | 22°C / 36°C | 113 mm | 83% | 15 km/h |
| June | 30°C | 26°C | 23°C / 34°C | 63 mm | 83% | 18 km/h |
| July | 30°C | 26°C | 22°C / 33°C | 48 mm | 81% | 17 km/h |
| August | 30°C | 26°C | 22°C / 33°C | 59 mm | 82% | 17 km/h |
| September | 30°C | 25°C | 22°C / 33°C | 64 mm | 82% | 16 km/h |
| October | 30°C | 24°C | 22°C / 34°C | 85 mm | 83% | 12 km/h |
| November | 30°C | 24°C | 21°C / 34°C | 111 mm | 82% | 11 km/h |
| December | 31°C | 23°C | 19°C / 34°C | 64 mm | 80% | 13 km/h |
Best time to visit Colombo
The most comfortable time to visit Colombo is generally January and July to August, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around May, totalling about 769 mm a year.
Travellers who prefer heat should aim for February, when highs average 32°C. May is the month to avoid if rain would spoil your plans — it averages 113 mm, roughly 5× the rainfall of February.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Colombo forecast for what is happening now.