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Moratuwa Weather by Month
Average temperatures, rainfall and humidity for Moratuwa, Sri Lanka, month by month, built from OpenWeather’s historical records. Use it to see what a typical Moratuwa month looks like before you travel — then check the live Moratuwa forecast for the days ahead.
Warmest month
April
32°C average high
Coolest month
January
23°C average low
Wettest month
May
122 mm of rain
Driest month
February
19 mm of rain
Average temperature and rainfall in Moratuwa 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 | 45 mm | 79% | 12 km/h |
| February | 32°C | 23°C | 19°C / 37°C | 19 mm | 76% | 12 km/h |
| March | 32°C | 25°C | 20°C / 36°C | 34 mm | 76% | 9 km/h |
| April | 32°C | 25°C | 22°C / 35°C | 52 mm | 77% | 10 km/h |
| May | 31°C | 26°C | 23°C / 36°C | 122 mm | 84% | 15 km/h |
| June | 30°C | 26°C | 23°C / 34°C | 87 mm | 86% | 17 km/h |
| July | 30°C | 26°C | 23°C / 33°C | 103 mm | 83% | 17 km/h |
| August | 30°C | 26°C | 22°C / 33°C | 79 mm | 83% | 17 km/h |
| September | 30°C | 25°C | 22°C / 33°C | 87 mm | 84% | 15 km/h |
| October | 29°C | 25°C | 22°C / 34°C | 91 mm | 84% | 12 km/h |
| November | 30°C | 24°C | 21°C / 34°C | 108 mm | 83% | 10 km/h |
| December | 30°C | 23°C | 19°C / 34°C | 76 mm | 82% | 11 km/h |
Best time to visit Moratuwa
The most comfortable time to visit Moratuwa is generally January to March, balancing mild daytime temperatures against the driest stretch of the year. Temperatures stay fairly even all year and rain concentrates around May, totalling about 903 mm a year.
Travellers who prefer heat should aim for April, when highs average 32°C. May is the month to avoid if rain would spoil your plans — it averages 122 mm, roughly 7× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Moratuwa forecast for what is happening now.