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Rajagiriya Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Rajagiriya.
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Climate overview of Rajagiriya
The climate in Rajagiriya, Sri Lanka, is remarkably consistent, with temperatures year-round averaging 31°C (88°F). The warmest month is March at 33°C (91°F), and the coolest is July at 30°C (86°F).
The city has a wet climate, receiving around 2633 mm (104 in) of rainfall per year. October is the wettest month. Sunshine peaks in March, when the city sees around 9.2 hours of sunshine per day.
Rajagiriya Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Rajagiriya - and find the best time to visit.
Monthly Temperature in Rajagiriya
In Rajagiriya temperatures are generally consistent throughout the year. On average, daytime temperatures range from a very warm 33°C (91°F) in March to a very warm 30°C (86°F) in July.
Nighttime temperatures range from 26°C (79°F) in March to 24°C (75°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Rajagiriya
Rajagiriya experiences significant rainfall throughout the year, averaging 2633 mm (104 in) of precipitation annually. The seasons in Rajagiriya bring significant changes in precipitation. The wettest month, October, receives heavy rainfall, with an average of 358 mm (14 in) of precipitation. This rainfall is distributed across 16 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 72 mm (2.8 in) over 5 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Rajagiriya 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 Rajagiriya
Rajagiriya 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
Data from: Colombo, Sri Lanka (3 KM, 2 Miles).
Daily hours of sunshine
Data from: Colombo, Sri Lanka (3 KM, 2 Miles).
Water Temperature in Rajagiriya
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
Data from: Colombo, Sri Lanka (3 KM, 2 Miles).
Humidity in Rajagiriya by Month
The relative humidity is high throughout the year in Rajagiriya.
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
Data from: Colombo, Sri Lanka (3 KM, 2 Miles).
Wind Speed in Rajagiriya
The mean wind speed varies between 1 m/s (2 knots) and 2 m/s (4 knots) throughout the year. It is lowest in February, March, April, October, November and December and highest during January, May, June, July, August and September. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Colombo, Sri Lanka (3 KM, 2 Miles).
Best Time to Visit Rajagiriya
For the most comfortable conditions available during the year, consider visiting Rajagiriya in January. Conditions are usually least comfortable in April, May, June, July, August, September, October, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
good
Feb
mixed
Mar
mixed
Apr
very wet
May
very wet
Jun
very wet
Jul
very wet
Aug
very wet
Sep
very wet
Oct
very wet
Nov
very wet
Dec
wet
- Best overall: January
- Warmest weather: January, February, March and April
- 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 Rajagiriya
What is the best time to visit Rajagiriya?
January typically offers the most optimal weather in Rajagiriya. In contrast, April, May, June, July, August, September, October, November and December tend to have less optimal conditions.
What temperatures can I expect in Rajagiriya?
Daytime highs range from 30°C (86°F) in July 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 Rajagiriya get?
Annual rainfall is around 2633 mm (104 in). October is the wettest month with 358 mm (14 in), while January is the driest with 72 mm (2.8 in).
How sunny is Rajagiriya?
Rajagiriya 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, Rajagiriya enjoys abundant sunshine.
Rajagiriya 3-Day Forecast
Rajagiriya on the map
Rajagiriya is highlighted - select any city to see its climate.
Popular in October
Where to go in October - average daytime high across popular destinations.
Colombo
30°C (86°F) Negombo30°C (86°F) Unawatuna29°C (84°F) Galle29°C (84°F) Mirissa30°C (86°F) Hikkaduwa29°C (84°F) Kandy28°C (82°F) Nuwara Eliya27°C (81°F) Bucket list
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