Moratuwa Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Moratuwa.
Climate overview of Moratuwa
With consistently stable weather, Moratuwa, Sri Lanka, sees little seasonal temperature change. Daytime highs average 31°C (88°F), ranging from 33°C (91°F) in March to 30°C (86°F) in August.
The city has a wet climate, receiving around 2712 mm (107 in) of rainfall per year. October is the wettest month. The most sunshine falls in March, with an average of 9.2 hours of daily sunshine.
Moratuwa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Moratuwa - and find the best time to visit.
Monthly Temperature in Moratuwa
The climate in Moratuwa remains fairly constant, offering very warm temperatures throughout the year. On average, daytime temperatures range from a very warm 33°C (91°F) in March to a comfortable 30°C (86°F) in August.
Nighttime temperatures range from 26°C (79°F) in March to 24°C (75°F) in August.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Moratuwa
Moratuwa is known for its substantial rainfall, with annual precipitation reaching 2712 mm (107 in). The seasons in Moratuwa bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 357 mm (14 in) of precipitation. This rainfall is distributed across 16 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 82 mm (3.2 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Moratuwa Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Moratuwa
Moratuwa enjoys sunny spells year-round. March sees up to 9.2 hours of daily sunshine, perfect for a sunny trip. September, the least sunny month, still offers a generous 6.3 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Water Temperature in Moratuwa
The mean water temperature over the year ranges from 26°C (79°F) in August to 28°C (82°F) in January.
Water temperature over the year
Humidity in Moratuwa by Month
The relative humidity is high throughout the year in Moratuwa.
The city experiences its highest humidity in June, reaching 79%. In February, the humidity drops to its lowest level at 69%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Moratuwa
The mean wind speed over the year ranges from 1 m/s (2 knots) in February, March, April, October, November and December to 2 m/s (4 knots) in January, May, June, July, August and September. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Moratuwa
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: January and February
- Warmest weather: January, February, March, April and May
- Most sunshine: March
- Fewest rainy days: January and February
- Best for swimming: Any time of year. The sea stays pleasantly warm year-round.
Frequently asked questions about the climate in Moratuwa
What is the best time to visit Moratuwa?
January and February typically offer the most optimal weather in Moratuwa. In contrast, March, April, May, June, July, August, September, October, November and December tend to have less optimal conditions.
What temperatures can I expect in Moratuwa?
Daytime highs range from 30°C (86°F) in August to 33°C (91°F) in March. Nighttime lows range from 24°C (75°F) to 26°C (79°F). Temperatures stay relatively stable year-round.
How much rain does Moratuwa get?
Annual rainfall is around 2712 mm (107 in). October is the wettest month with 357 mm (14 in), while January is the driest with 82 mm (3.2 in).
How sunny is Moratuwa?
Moratuwa receives around 2,623 hours of sunshine per year. March is the sunniest month with 276 hours, while September is the cloudiest with just 189 hours. Overall, Moratuwa enjoys abundant sunshine.
Moratuwa 3-Day Forecast
Moratuwa on the map
Moratuwa is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Colombo
30°C (86°F) Negombo30°C (86°F) Mirissa29°C (84°F) Unawatuna29°C (84°F) Hikkaduwa29°C (84°F) Galle29°C (84°F) Kandy
29°C (84°F) Nuwara Eliya28°C (82°F) 
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