Climate and monthly weather forecastRajagiriya, Sri Lanka
Climate and monthly weather forecast
Weather in January
January is a tropical winter month in Rajagiriya, Sri Lanka, with temperature in the range of an average high of 30.8°C (87.4°F) and an average low of 23.1°C (73.6°F). The advent of January sees the average high-temperature at a hot 30.8°C (87.4°F), subtly shifted from December's 29.9°C (85.8°F). Weather in January »Weather in February
The last month of the winter, February, is another tropical month in Rajagiriya, Sri Lanka, with an average temperature fluctuating between 23.3°C (73.9°F) and 31.4°C (88.5°F). Shifting into February, Rajagiriya records an average high-temperature of a still hot 31.4°C (88.5°F), presenting minor fluctuations compared to the previous month. Weather in February »Weather in March
The first month of the spring, March, is still a hot month in Rajagiriya, Sri Lanka, with temperature in the range of an average low of 24.3°C (75.7°F) and an average high of 31.8°C (89.2°F). Rajagiriya sees its peak of temperatures during March and April, with an average high-temperature of 31.8°C (89.2°F). March's heat index is estimated at a blistering 42°C (107.6°F). Weather in March »Weather in April
April, like March, is another hot spring month in Rajagiriya, Sri Lanka, with an average temperature fluctuating between 31.8°C (89.2°F) and 25.8°C (78.4°F). March and April represent the warmest period, with an average high-temperature of 31.8°C (89.2°F). April's average heat index is estimated at a blistering 42°C (107.6°F). Weather in April »Weather in May
The last month of the spring, May, is another tropical month in Rajagiriya, Sri Lanka, with temperature in the range of an average high of 30.6°C (87.1°F) and an average low of 26.3°C (79.3°F). As Rajagiriya, Sri Lanka, welcomes May, the average high-temperature stabilizes at a still tropical 30.6°C (87.1°F), showing little deviation from April's 31.8°C (89.2°F). Weather in May »Weather in June
June, the first month of the summer in Rajagiriya, is also a moderately hot month, with an average temperature fluctuating between 29.3°C (84.7°F) and 25.8°C (78.4°F). With the start of June, Rajagiriya measures an average high-temperature of a moderately hot 29.3°C (84.7°F), not significantly differing from May's 30.6°C (87.1°F). Weather in June »Weather in July
July, like June, in Rajagiriya, Sri Lanka, is another warm summer month, with an average temperature fluctuating between 25.3°C (77.5°F) and 28.9°C (84°F). Rajagiriya's coldest period falls in July and August, when the average high-temperatures ascend to 28.9°C (84°F). The heat index in July is estimated at a torrid 35°C (95°F). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Rajagiriya, Sri Lanka, with an average temperature ranging between max 28.9°C (84°F) and min 25.2°C (77.4°F). During July and August, Rajagiriya experiences its lowest temperatures, averaging a high-temperature of 28.9°C (84°F). The heat index value for August is estimated at a very hot 35°C (95°F). Weather in August »Weather in September
September, the first month of the autumn in Rajagiriya, is also a moderately hot month, with an average temperature varying between 24.9°C (76.8°F) and 29.1°C (84.4°F). Rajagiriya, Sri Lanka, records an average high-temperature of a still moderately hot 29.1°C (84.4°F) in September, maintaining a close correlation with August's 28.9°C (84°F). Weather in September »Weather in October
October in Rajagiriya, Sri Lanka, is a tropical autumn month, with an average temperature fluctuating between 30°C (86°F) and 25°C (77°F). The shift into October reveals an average high-temperature of a tropical 30°C (86°F), closely mirroring September's climate. Weather in October »Weather in November
The last month of the autumn, November, is another hot month in Rajagiriya, Sri Lanka, with temperature in the range of an average low of 24.5°C (76.1°F) and an average high of 30.1°C (86.2°F). The onset of November brings with it an average high-temperature of a still hot 30.1°C (86.2°F), showing a negligible variation from the month before. Weather in November »Weather in December
The first month of the winter, December, is also a moderately hot month in Rajagiriya, Sri Lanka, with an average temperature varying between 23.7°C (74.7°F) and 29.9°C (85.8°F). During December, Rajagiriya records an average high-temperature of a moderately hot 29.9°C (85.8°F), marking a slight divergence from November's 30.1°C (86.2°F). Weather in December »Updated: Feb 6, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
The months with the lowest humidity in Rajagiriya, Sri Lanka, are January and February, with an average relative humidity of 74%.
The month with the least rainfall is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.
In Rajagiriya, Sri Lanka, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.
With an average of 9.1h of sunshine, January has the most sunshine of the year.
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index in Rajagiriya.
In Rajagiriya, Sri Lanka, the months of March and April register the average highest temperatures, peaking at 31.8°C (89.2°F).
May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index in Rajagiriya.
June through August, with an average relative humidity of 83%, are most humid months.
The month with the most rainfall in Rajagiriya, Sri Lanka, is June, when the rain falls for 29.3 days and typically aggregates up to 341mm (13.43") of precipitation.
June has the longest days of the year in Rajagiriya, Sri Lanka, with an average of 12h and 30min of daylight.
The months of July and August see the lowest levels of Rajagiriya's temperatures, averaging a high of 28.9°C (84°F).
The month with the least sunshine in Rajagiriya is November, with an average of 6.7h of sunshine.
December has the shortest days of the year in Rajagiriya, Sri Lanka, with an average of 11h and 42min of daylight.
Rajagiriya does not observe Daylight Saving Time (DST). +0530 timezone is used over the entire year.
Average temperature
Rajagiriya, Sri Lanka
The warmest months (with the highest average high temperature) are March and April (31.8°C).
The months with the lowest average high temperature are July and August (28.9°C).
The month with the highest average low temperature is May (26.3°C).
The coldest month (with the lowest average low temperature) is January (23.1°C).
Average pressure
Rajagiriya, Sri Lanka
- Average pressure in January:
1011.6mbar - Average pressure in February:
1011.3mbar - Average pressure in March:
1010.7mbar - Average pressure in April:
1009.7mbar - Average pressure in May:
1008.6mbar - Average pressure in June:
1008.7mbar
- Average pressure in July:
1008.7mbar - Average pressure in August:
1009.1mbar - Average pressure in September:
1009.8mbar - Average pressure in October:
1009.9mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1010.4mbar
The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).
Average wind speed
Rajagiriya, Sri Lanka
- Average wind speed in January:
12.8km/h - Average wind speed in February:
9.9km/h - Average wind speed in March:
8km/h - Average wind speed in April:
8.6km/h - Average wind speed in May:
12.9km/h - Average wind speed in June:
15.1km/h
- Average wind speed in July:
14.1km/h - Average wind speed in August:
14.2km/h - Average wind speed in September:
13.2km/h - Average wind speed in October:
10.2km/h - Average wind speed in November:
8.9km/h - Average wind speed in December:
11.5km/h
The windiest month (with the highest average wind speed) is June (15.1km/h).
The calmest month (with the lowest average wind speed) is March (8km/h).
Average humidity
Rajagiriya, Sri Lanka
The months with the highest relative humidity are June, July and August (83%).
The months with the lowest relative humidity are January and February (74%).
Average rainfall
Rajagiriya, Sri Lanka
- Average rainfall in January:
40mm - Average rainfall in February:
47mm - Average rainfall in March:
66mm - Average rainfall in April:
137mm - Average rainfall in May:
306mm - Average rainfall in June:
341mm
- Average rainfall in July:
256mm - Average rainfall in August:
287mm - Average rainfall in September:
206mm - Average rainfall in October:
237mm - Average rainfall in November:
191mm - Average rainfall in December:
148mm
The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).
Average rainfall days
Rajagiriya, Sri Lanka
- Average rainfall days in January:
11.6 days - Average rainfall days in February:
13.8 days - Average rainfall days in March:
19.8 days - Average rainfall days in April:
25.4 days - Average rainfall days in May:
28.8 days - Average rainfall days in June:
29.3 days
- Average rainfall days in July:
29.8 days - Average rainfall days in August:
30.2 days - Average rainfall days in September:
26.9 days - Average rainfall days in October:
27 days - Average rainfall days in November:
25.7 days - Average rainfall days in December:
21.1 days
The month with the highest number of rainy days is August (30.2 days).
The month with the least rainy days is January (11.6 days).
Average daylight / Average sunshine
Rajagiriya, Sri Lanka
- Average daylight in January:
11h and 48min - Average daylight in February:
11h and 54min - Average daylight in March:
12h and 6min - Average daylight in April:
12h and 18min - Average daylight in May:
12h and 24min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 30min - Average daylight in August:
12h and 18min - Average daylight in September:
12h and 12min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 48min - Average daylight in December:
11h and 42min
The month with the longest days is June (Average daylight: 12h and 30min).
The month with the shortest days is December (Average daylight: 11h and 42min).
- Average sunshine in January:
9h and 6min - Average sunshine in February:
9h and 0min - Average sunshine in March:
9h and 0min - Average sunshine in April:
8h and 54min - Average sunshine in May:
8h and 36min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
7h and 36min - Average sunshine in August:
7h and 0min - Average sunshine in September:
7h and 24min - Average sunshine in October:
7h and 42min - Average sunshine in November:
6h and 42min - Average sunshine in December:
6h and 54min
The month with the most sunshine is January (Average sunshine: 9h and 6min).
The month with the least sunshine is November (Average sunshine: 6h and 42min).
Average sunshine days
Rajagiriya, Sri Lanka
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
12.7 days - Average sunshine days in March:
8.2 days - Average sunshine days in April:
2.6 days - Average sunshine days in May:
1.3 days - Average sunshine days in June:
0.3 days
- Average sunshine days in July:
0.4 days - Average sunshine days in August:
0.3 days - Average sunshine days in September:
1.5 days - Average sunshine days in October:
1.7 days - Average sunshine days in November:
3.6 days - Average sunshine days in December:
8.3 days
The month with the most sunshine days is January (17.2 days).
The months with the least sunshine days are June and August (0.3 days).
Average UV index
Rajagiriya, Sri Lanka
The months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
The months with the lowest UV index are May, June, August and October (UV index 6).
Average cloud cover
Rajagiriya, Sri Lanka
The month with the most cloud cover is June (Cloud cover 57).
The month with the least cloud cover is January (Cloud cover 24).
Average visibility
Rajagiriya, Sri Lanka
The months with the highest visibility are January, February, March, April and December (10km).
The months with the lowest visibility are May, June, July, August, September, October and November (9km).
