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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January in Kolonnawa, Sri Lanka, is a hot winter month, with an average temperature fluctuating between 23.1°C (73.6°F) and 30.8°C (87.4°F). January's onset records a minor alteration in the average high-temperature to a hot 30.8°C (87.4°F) 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 Kolonnawa, Sri Lanka, with an average temperature fluctuating between 31.4°C (88.5°F) and 23.3°C (73.9°F). The start of February marks an average high-temperature of a still tropical 31.4°C (88.5°F), hardly distinguishable from the conditions in January. Weather in February »
Weather in March
March, the first month of the spring in Kolonnawa, is still a tropical month, with an average temperature fluctuating between 24.3°C (75.7°F) and 31.8°C (89.2°F). Kolonnawa's warmest season falls during March and April, averaging a 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 tropical spring month in Kolonnawa, Sri Lanka, with an average temperature ranging between min 25.8°C (78.4°F) and max 31.8°C (89.2°F). March and April, with an average high-temperature of 31.8°C (89.2°F), are the warmest months. The heat index in April is estimated at an extremely hot 42°C (107.6°F). Weather in April »
Weather in May
The last month of the spring, May, is also a hot month in Kolonnawa, Sri Lanka, with an average temperature varying between 26.3°C (79.3°F) and 30.6°C (87.1°F). The average high-temperature in May, at a still hot 30.6°C (87.1°F), reveals a modest deviation from April's 31.8°C (89.2°F). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in Kolonnawa, Sri Lanka, with an average temperature varying between 25.8°C (78.4°F) and 29.3°C (84.7°F). June's weather records an average high-temperature of a warm 29.3°C (84.7°F), showing little deviation from May. Weather in June »
Weather in July
July, the same as June, is another warm summer month in Kolonnawa, Sri Lanka, with an average temperature varying between 25.3°C (77.5°F) and 28.9°C (84°F). Kolonnawa witnesses its lowest temperatures in July and August, reaching an average of 28.9°C (84°F). The heat index value during July is estimated at a fiery hot 35°C (95°F). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Kolonnawa, Sri Lanka, with an average temperature fluctuating between 28.9°C (84°F) and 25.2°C (77.4°F). The coldest months are July and August, with an average high-temperature of 28.9°C (84°F). August's mean heat index is estimated at a torrid 35°C (95°F). Weather in August »
Weather in September
September, the first month of the autumn in Kolonnawa, is also a moderately hot month, with an average temperature fluctuating between 24.9°C (76.8°F) and 29.1°C (84.4°F). During September, Kolonnawa records an average high-temperature of a still moderately hot 29.1°C (84.4°F), marking a slight divergence from August's 28.9°C (84°F). Weather in September »
Weather in October
October is a tropical autumn month in Kolonnawa, Sri Lanka, with temperature in the range of an average low of 25°C (77°F) and an average high of 30°C (86°F). October's advent presents an average high-temperature of a hot 30°C (86°F), indicating a slight variation from the conditions of the previous month. Weather in October »
Weather in November
November, the last month of the autumn in Kolonnawa, is another hot month, with an average temperature fluctuating between 24.5°C (76.1°F) and 30.1°C (86.2°F). Kolonnawa marks the start of November with an average high-temperature of a still tropical 30.1°C (86.2°F), hinting at a slight fluctuation from October's 30°C (86°F). Weather in November »
Weather in December
December, the first month of the winter in Kolonnawa, is also a moderately hot month, with an average temperature varying between 23.7°C (74.7°F) and 29.9°C (85.8°F). Upon the beginning of December, Kolonnawa's high-temperatures register at a moderately hot 29.9°C (85.8°F), closely mirroring the preceding month. 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
What are the least humid months in Kolonnawa?
January and February, with an average relative humidity of 74%, are the least humid months in Kolonnawa, Sri Lanka.
What is the driest month in Kolonnawa?
The month with the least rainfall in Kolonnawa, Sri Lanka, is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.
How many days does it rain in Kolonnawa?
In Kolonnawa, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.
What month has the most sunshine in Kolonnawa?
With an average of 9.1h of sunshine, January has the most sunshine of the year in Kolonnawa.
What is the month with the highest UV index in Kolonnawa?
January through April, July, September, November and December, with an average maximum UV index of 7, are months with the highest UV index.
What is the warmest month in Kolonnawa?
In Kolonnawa, March and April are characterised by the peak of temperatures, recording an average high of 31.8°C (89.2°F).
When is the lowest UV index in Kolonnawa?
The months with the lowest UV index are May, June, August and October, with an average maximum UV index of 6.
What is the most humid month in Kolonnawa?
The months with the highest humidity are June through August, with an average relative humidity of 83%.
What is the wettest month in Kolonnawa?
The month with the most rainfall in Kolonnawa, Sri Lanka, is June, when the rain falls for 29.3 days and typically aggregates up to 341mm (13.43") of precipitation.
When are the longest days in Kolonnawa?
The month with the longest days is June, with an average of 12h and 30min of daylight.
What part of the year is the coldest in Kolonnawa?
During July and August, Kolonnawa experiences its lowest temperatures, averaging a high-temperature of 28.9°C (84°F).
What is the month with the least sunshine in Kolonnawa?
November has the least sunshine of the year in Kolonnawa, Sri Lanka, with an average of 6.7h of sunshine.
What is the month with the shortest days in Kolonnawa?
December has the shortest days of the year, with an average of 11h and 42min of daylight.
Is there Daylight Saving Time (DST) in Kolonnawa?
Kolonnawa does not utilize Daylight Saving Time (DST). +0530 timezone is used over the entire year.
Average temperature
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, Sri Lanka
- Average daylight in January:
11h and 5min - Average daylight in February:
11h and 5min - Average daylight in March:
12h and 1min - Average daylight in April:
12h and 2min - Average daylight in May:
12h and 2min - Average daylight in June:
12h and 3min
- Average daylight in July:
12h and 3min - Average daylight in August:
12h and 2min - Average daylight in September:
12h and 1min - Average daylight in October:
12h and 0min - Average daylight in November:
11h and 5min - Average daylight in December:
11h and 4min
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 1min - Average sunshine in February:
9h and 0min - Average sunshine in March:
9h and 0min - Average sunshine in April:
8h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
8h and 0min
- Average sunshine in July:
7h and 4min - Average sunshine in August:
7h and 0min - Average sunshine in September:
7h and 2min - Average sunshine in October:
7h and 4min - Average sunshine in November:
6h and 4min - Average sunshine in December:
6h and 5min
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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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
Kolonnawa, 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).
