Climate and monthly weather forecast
Colombo, Sri Lanka

Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake

Weather in January

January is a tropical winter month in Colombo, Sri Lanka, with an average temperature fluctuating between 30.8°C (87.4°F) and 23.1°C (73.6°F). In Colombo, the average high-temperature in January is almost the same as in December - a tropical 30.8°C (87.4°F). Weather in January »

Weather in February

The last month of the winter, February, is also a hot month in Colombo, Sri Lanka, with an average temperature ranging between min 23.3°C (73.9°F) and max 31.4°C (88.5°F). In February, the average high-temperature is almost the same as in January - a still hot 31.4°C (88.5°F). Weather in February »

Weather in March

March, the first month of the spring in Colombo, is still a hot month, with an average temperature fluctuating between 31.8°C (89.2°F) and 24.3°C (75.7°F). The warmest months are March and April, with an average high-temperature of 31.8°C (89.2°F). In March, the average 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 Colombo, 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 average heat index in April is estimated at a blistering 42.4°C (108.3°F). Weather in April »

Weather in May

The last month of the spring, May, is another hot month in Colombo, Sri Lanka, with an average temperature ranging between max 30.6°C (87.1°F) and min 26.3°C (79.3°F). In May, the average high-temperature is essentially the same as in April - a still hot 30.6°C (87.1°F). Weather in May »

Weather in June

June, the first month of the summer in Colombo, is still a warm month, with an average temperature ranging between min 25.8°C (78.4°F) and max 29.3°C (84.7°F). In June, the average high-temperature is almost the same as in May - a warm 29.3°C (84.7°F). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Colombo, Sri Lanka, with an average temperature fluctuating between 25.3°C (77.5°F) and 28.9°C (84°F). The coldest months are July and August, with an average high-temperature of 28.9°C (84°F). In July, the average heat index is estimated at a very hot 35.1°C (95.2°F). Weather in July »

Weather in August

August, the last month of the summer in Colombo, is also a moderately hot month, with an average temperature fluctuating between 28.9°C (84°F) and 25.2°C (77.4°F). July and August, with an average high-temperature of 28.9°C (84°F), are the coldest months. In August, the average heat index is estimated at a torrid 35.1°C (95.2°F). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Colombo, Sri Lanka, with an average temperature ranging between max 29.1°C (84.4°F) and min 24.9°C (76.8°F). In September, the average high-temperature is practically the same as in August - a still warm 29.1°C (84.4°F). Weather in September »

Weather in October

October is a hot autumn month in Colombo, Sri Lanka, with temperature in the range of an average high of 30°C (86°F) and an average low of 25°C (77°F). In October, the average high-temperature is relatively the same as in September - a tropical 30°C (86°F). Weather in October »

Weather in November

November, the last month of the autumn in Colombo, is also a hot month, with an average temperature ranging between max 30.1°C (86.2°F) and min 24.5°C (76.1°F). In Colombo, the average high-temperature in November is almost the same as in October - a still hot 30.1°C (86.2°F). Weather in November »

Weather in December

The first month of the winter, December, is also a moderately hot month in Colombo, Sri Lanka, with temperature in the range of an average high of 29.9°C (85.8°F) and an average low of 23.7°C (74.7°F). In Colombo, the average high-temperature in December is almost the same as in November - a warm 29.9°C (85.8°F). Weather in December »
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FAQ

What is the least humid month in Colombo?

January and February, with an average relative humidity of 74%, are the least humid months.

What is the driest month in Colombo?

The month with the least rainfall in Colombo, Sri Lanka, is January, when the rain falls for 11.6 days and typically collects 40mm (1.57") of precipitation.

How much does it rain in Colombo?

In Colombo, 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 Colombo?

January has the most sunshine of the year, with an average of 9.1h of sunshine.

When is the highest UV index in Colombo?

The months with the highest UV index are January through April, July, September, November and December, with an average maximum UV index of 7.

What are the warmest months in Colombo?

March and April, with an average high-temperature of 31.8°C (89.2°F), are warmest months in Colombo, Sri Lanka.

What is the month with the warmest sea water in Colombo?

The month with the warmest seawater in Colombo is April, with an average sea temperature of 29.6°C (85.3°F).

When is the lowest UV index in Colombo?

May, June, August and October, with an average maximum UV index of 6, are months with the lowest UV index.

What is the most humid month in Colombo?

June through August, with an average relative humidity of 83%, are most humid months.

What is the rainiest month in Colombo?

June is the month with the most rainfall in Colombo. Rain falls for 29.3 days and accumulates 341mm (13.43") of precipitation.

When are the longest days in Colombo?

June has the longest days of the year in Colombo, with an average of 12h and 31min of daylight.

What is the coldest month in Colombo?

The coldest months in Colombo are July and August, with an average high-temperature of 28.9°C (84°F).

When is the sea coldest in Colombo?

The month with the coldest seawater in Colombo is August, with an average sea temperature of 27.2°C (81°F).

What is the month with the least sunshine in Colombo?

With an average of 6.7h of sunshine, November has the least sunshine of the year.

What is the month with the shortest days in Colombo?

With an average of 11h and 44min of daylight, December has the shortest days of the year in Colombo.

Is there Daylight Saving Time (DST) in Colombo?

Colombo does not utilize Daylight Saving Time (DST). +0530 timezone is used throughout the entire year.

Average temperature
Colombo, Sri Lanka

Average temperature - Colombo, 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).

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Average pressure
Colombo, Sri Lanka

Average pressure - Colombo, Sri Lanka

The month with the highest atmospheric pressure is January (1011.6mbar).
The month with the lowest atmospheric pressure is May (1008.6mbar).

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Average wind speed
Colombo, Sri Lanka

Average wind speed - Colombo, Sri Lanka

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).

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Average humidity
Colombo, Sri Lanka

Average humidity - Colombo, 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%).

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Average rainfall
Colombo, Sri Lanka

Average rainfall - Colombo, Sri Lanka

The wettest month (with the highest rainfall) is June (341mm).
The driest month (with the least rainfall) is January (40mm).

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Average rainfall days
Colombo, Sri Lanka

Average rainfall days - Colombo, Sri Lanka

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).

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Average sea temperature
Colombo, Sri Lanka

Average sea temperature - Colombo, Sri Lanka

The best month for swimming (with the highest average sea temperature) is April (29.6°C).
The coldest month (with the lowest average sea temperature) is August (27.2°C).

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Average daylight / Average sunshine
Colombo, Sri Lanka

Average daylight / Average sunshine - Colombo, Sri Lanka

The month with the longest days is June (Average daylight: 12h and 31min).
The month with the shortest days is December (Average daylight: 11h and 44min).

The month with the most sunshine is January (Average sunshine: 9.1h).
The month with the least sunshine is November (Average sunshine: 6.7h).

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Average sunshine days
Colombo, Sri Lanka

Average sunshine days - Colombo, Sri Lanka

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).

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Average UV index
Colombo, Sri Lanka

Average UV index - Colombo, 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).

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Average visibility
Colombo, Sri Lanka

Average visibility - Colombo, 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).

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