Climate and monthly weather forecastRetiyagama, Sri Lanka
Climate and monthly weather forecast
Weather in January
January, the same as December, is another warm winter month in Retiyagama, Sri Lanka, with an average temperature fluctuating between 18.2°C (64.8°F) and 28.3°C (82.9°F). The introduction of January notes a subtle temperature variation to a still warm 28.3°C (82.9°F) from December's 27.5°C (81.5°F). Weather in January »Weather in February
February, the last month of the winter in Retiyagama, is another warm month, with an average temperature fluctuating between 29.7°C (85.5°F) and 18.1°C (64.6°F). Retiyagama, Sri Lanka, sees the arrival of February with an average high-temperature of a still moderately hot 29.7°C (85.5°F), indicating a subtle variation from January. Weather in February »Weather in March
March, the first month of the spring in Retiyagama, is a hot month, with an average temperature ranging between max 31.5°C (88.7°F) and min 19.2°C (66.6°F). The temperatures reach their highest averages in March, with highs of 31.5°C (88.7°F) and lows of 19.2°C (66.6°F). March's mean heat index is estimated at a blistering 40°C (104°F). Weather in March »Weather in April
April, like March, is another tropical spring month in Retiyagama, Sri Lanka, with temperature in the range of an average low of 20.8°C (69.4°F) and an average high of 31.2°C (88.2°F). Retiyagama's average high-temperature in April is a still hot 31.2°C (88.2°F), marking an insignificant difference from the 31.5°C (88.7°F) of March. Weather in April »Weather in May
The last month of the spring, May, is also a hot month in Retiyagama, Sri Lanka, with an average temperature fluctuating between 30.1°C (86.2°F) and 21.8°C (71.2°F). The shift into May records an average high-temperature of a still hot 30.1°C (86.2°F), subtly varied from April's 31.2°C (88.2°F). Weather in May »Weather in June
The first month of the summer, June, is also a moderately hot month in Retiyagama, Sri Lanka, with an average temperature ranging between min 21.8°C (71.2°F) and max 29.3°C (84.7°F). June is marked by an average high-temperature of a moderately hot 29.3°C (84.7°F), almost identical to the preceding month. Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Retiyagama, Sri Lanka, with an average temperature varying between 21.4°C (70.5°F) and 29.3°C (84.7°F). As Retiyagama steps into July, the average high-temperature is a still moderately hot 29.3°C (84.7°F), identical to June. Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Retiyagama, Sri Lanka, with an average temperature varying between 29.2°C (84.6°F) and 21.2°C (70.2°F). The start of August marks an average high-temperature of a still warm 29.2°C (84.6°F), hardly distinguishable from the conditions in July. Weather in August »Weather in September
September, the first month of the autumn in Retiyagama, is also a moderately hot month, with an average temperature ranging between max 29.5°C (85.1°F) and min 21.1°C (70°F). September's weather displays an average high-temperature of a still warm 29.5°C (85.1°F), slightly varied from August's 29.2°C (84.6°F). Weather in September »Weather in October
October, the same as September, is another warm autumn month in Retiyagama, Sri Lanka, with an average temperature varying between 29.4°C (84.9°F) and 20.7°C (69.3°F). October registers an average high-temperature of a still moderately hot 29.4°C (84.9°F), slightly varied from September's 29.5°C (85.1°F). Weather in October »Weather in November
The last month of the autumn, November, is another warm month in Retiyagama, Sri Lanka, with an average temperature ranging between min 20.1°C (68.2°F) and max 28.3°C (82.9°F). November brings an average high-temperature of a still moderately hot 28.3°C (82.9°F), showing a slight difference from October's 29.4°C (84.9°F). Weather in November »Weather in December
The first month of the winter, December, is also a moderately hot month in Retiyagama, Sri Lanka, with an average temperature ranging between max 27.5°C (81.5°F) and min 19.5°C (67.1°F). Retiyagama experiences its lowest average temperatures in December, reaching a peak of 27.5°C (81.5°F) and a minimum of 19.5°C (67.1°F). December's mean heat index is estimated at a hot 31°C (87.8°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
January is the month with the least rainfall. Rain falls for 14.1 days and accumulates 38mm (1.5") of precipitation.
Throughout the year, there are 278.4 rainfall days, and 1466mm (57.72") of precipitation is accumulated.
January through September, November and December, with an average maximum UV index of 6, are months with the highest UV index in Retiyagama.
With average temperatures fluctuating between a high of 31.5°C (88.7°F) and a low of 19.2°C (66.6°F), March stands out as the warmest month in Retiyagama, Sri Lanka.
The least humid month in Retiyagama is March, with an average relative humidity of 74%.
The month with the longest days in Retiyagama, Sri Lanka, is June, with an average of 12h and 30min of daylight.
The month with the most sunshine in Retiyagama, Sri Lanka, is June, with an average of 10.8h of sunshine.
The month with the most rainfall in Retiyagama, Sri Lanka, is October, when the rain falls for 27.4 days and typically aggregates up to 301mm (11.85") of precipitation.
The month with the lowest UV index in Retiyagama is October, with an average maximum UV index of 5.
December brings the lowest temperatures in Retiyagama, Sri Lanka, with an average high of 27.5°C (81.5°F) and an average low of 19.5°C (67.1°F).
The most humid month is December, with an average relative humidity of 84%.
With an average of 11h and 42min of daylight, December has the shortest days of the year in Retiyagama, Sri Lanka.
Retiyagama does not utilize Daylight Saving Time (DST). +0530 timezone is used throughout the entire year.
December has the least sunshine of the year, with an average of 5.7h of sunshine.
Average temperature
Retiyagama, Sri Lanka
The warmest month (with the highest average high temperature) is March (31.5°C).
The month with the lowest average high temperature is December (27.5°C).
The months with the highest average low temperature are May and June (21.8°C).
The coldest month (with the lowest average low temperature) is February (18.1°C).
Average pressure
Retiyagama, Sri Lanka
- Average pressure in January:
1011.8mbar - Average pressure in February:
1011.5mbar - Average pressure in March:
1010.8mbar - Average pressure in April:
1009.6mbar - Average pressure in May:
1008.2mbar - Average pressure in June:
1008.1mbar
- Average pressure in July:
1008.2mbar - Average pressure in August:
1008.5mbar - Average pressure in September:
1009.3mbar - Average pressure in October:
1009.7mbar - Average pressure in November:
1009.8mbar - Average pressure in December:
1010.5mbar
The month with the highest atmospheric pressure is January (1011.8mbar).
The month with the lowest atmospheric pressure is June (1008.1mbar).
Average wind speed
Retiyagama, Sri Lanka
- Average wind speed in January:
7.7km/h - Average wind speed in February:
7.1km/h - Average wind speed in March:
5km/h - Average wind speed in April:
4.7km/h - Average wind speed in May:
9.3km/h - Average wind speed in June:
13.5km/h
- Average wind speed in July:
12.6km/h - Average wind speed in August:
11.6km/h - Average wind speed in September:
10.8km/h - Average wind speed in October:
6.8km/h - Average wind speed in November:
5.3km/h - Average wind speed in December:
6.7km/h
The windiest month (with the highest average wind speed) is June (13.5km/h).
The calmest month (with the lowest average wind speed) is April (4.7km/h).
Average humidity
Retiyagama, Sri Lanka
The month with the highest relative humidity is December (84%).
The month with the lowest relative humidity is March (74%).
Average rainfall
Retiyagama, Sri Lanka
- Average rainfall in January:
38mm - Average rainfall in February:
59mm - Average rainfall in March:
72mm - Average rainfall in April:
152mm - Average rainfall in May:
163mm - Average rainfall in June:
57mm
The wettest month (with the highest rainfall) is October (301mm).
The driest month (with the least rainfall) is January (38mm).
Average rainfall days
Retiyagama, Sri Lanka
- Average rainfall days in January:
14.1 days - Average rainfall days in February:
14.5 days - Average rainfall days in March:
18.9 days - Average rainfall days in April:
27 days - Average rainfall days in May:
28.6 days - Average rainfall days in June:
25.1 days
- Average rainfall days in July:
24.3 days - Average rainfall days in August:
25.8 days - Average rainfall days in September:
23.4 days - Average rainfall days in October:
27.4 days - Average rainfall days in November:
26.4 days - Average rainfall days in December:
22.9 days
The month with the highest number of rainy days is May (28.6 days).
The month with the least rainy days is January (14.1 days).
Average daylight / Average sunshine
Retiyagama, 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 30min - Average daylight in June:
12h and 30min
- Average daylight in July:
12h and 30min - Average daylight in August:
12h and 24min - 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:
8h and 30min - Average sunshine in February:
8h and 42min - Average sunshine in March:
8h and 54min - Average sunshine in April:
9h and 24min - Average sunshine in May:
10h and 24min - Average sunshine in June:
10h and 48min
- Average sunshine in July:
10h and 12min - Average sunshine in August:
8h and 42min - Average sunshine in September:
10h and 18min - Average sunshine in October:
7h and 54min - Average sunshine in November:
6h and 48min - Average sunshine in December:
5h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days
Retiyagama, Sri Lanka
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
10.3 days - Average sunshine days in April:
1.8 days - Average sunshine days in May:
1.2 days - Average sunshine days in June:
1.7 days
- Average sunshine days in July:
2.8 days - Average sunshine days in August:
2.6 days - Average sunshine days in September:
3.9 days - Average sunshine days in October:
2.3 days - Average sunshine days in November:
3 days - Average sunshine days in December:
6.8 days
The month with the most sunshine days is January (14.8 days).
The month with the least sunshine days is May (1.2 days).
Average UV index
Retiyagama, Sri Lanka
The months with the highest UV index are January, February, March, April, May, June, July, August, September, November and December (UV index 6).
The month with the lowest UV index is October (UV index 5).
Average cloud cover
Retiyagama, Sri Lanka
The months with the most cloud cover are November and December (Cloud cover 47).
The month with the least cloud cover is March (Cloud cover 27).
Average visibility
Retiyagama, Sri Lanka
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March, April, November and December (8km).
