Monthly weather forecast and climate
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
January is a tropical winter month in Colombo, 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). In January, the average high-temperature is almost the same as in December - a tropical 30.8°C (87.4°F). Weather in January »

February, the last month of the winter, in Colombo, is another tropical month, with temperature in the range of an average low of 23.3°C (73.9°F) and an average high of 31.4°C (88.5°F). In February, the average high-temperature is essentially the same as in January - a still tropical 31.4°C (88.5°F). Weather in February »

The first month of the spring, March, is still a tropical month in Colombo, Sri Lanka, with 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). The average heat index is estimated at a scorching 42°C (107.6°F). Weather in March »

April, like March, is a hot spring month in Colombo, Sri Lanka, with average temperature fluctuating between 25.8°C (78.4°F) and 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. In April, the average heat index is calculated to a blistering 42.4°C (108.3°F). Weather in April »

May, the last month of the spring, in Colombo, is also a hot month, with average temperature fluctuating between 26.3°C (79.3°F) and 30.6°C (87.1°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 »

The first month of the summer, June, is also a moderately hot month in Colombo, Sri Lanka, with average temperature fluctuating between 29.3°C (84.7°F) and 25.8°C (78.4°F). In June, the average high-temperature is essentially the same as in May - a moderately hot 29.3°C (84.7°F). Weather in June »

July, like June, in Colombo, Sri Lanka, is another warm summer month, with average temperature varying between 28.9°C (84°F) and 25.3°C (77.5°F). July and August, with an average high-temperature of 28.9°C (84°F), are the coldest months. In July, the average heat index is appraised at a sweltering 35.1°C (95.2°F). Weather in July »

The last month of the summer, August, is another warm month in Colombo, Sri Lanka, with temperature in the range of an average high of 28.9°C (84°F) and an average low of 25.2°C (77.4°F). The coldest months are July and August, with an average high-temperature of 28.9°C (84°F). The average heat index in August is evaluated at a sweltering 35.1°C (95.2°F). Weather in August »

September, the first month of the autumn, in Colombo, is also a moderately hot month, with temperature in the range of an average high of 29.1°C (84.4°F) and an average low of 24.9°C (76.8°F). In Colombo, the average high-temperature is practically the same as in August - a still moderately hot 29.1°C (84.4°F). Weather in September »

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

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

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

What is the least humid month in Colombo?

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

How many days does it rain in Colombo?

In Colombo, Sri Lanka, during the entire year, the rain falls for 289.4 days and collects up to 2262mm (89.06") of precipitation.

What is the driest month in Colombo?

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

What month has the most sunshine in Colombo?

January has the most sunshine of the year in Colombo, Sri Lanka, with an average of 9.1h of sunshine.

What is the month with the highest UV index in Colombo?

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 Colombo?

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

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

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

What are the months with the lowest UV index in Colombo?

Months with the lowest UV index in Colombo, Sri Lanka, are May, June, August and October, with an average maximum UV index of 6.

What is the most humid month in Colombo?

Months with the highest humidity in Colombo, Sri Lanka, are June through August, with an average relative humidity of 83%.

What is the wettest month in Colombo?

The month with the most rainfall 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 Colombo?

June and July, with an average of 12.5h of daylight, are months with the longest days in Colombo.

What is the coldest month in Colombo?

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

When is the sea coldest in Colombo?

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

What is the month with the least sunshine in Colombo?

November has the least sunshine of the year in Colombo, Sri Lanka, with an average of 6.7h of sunshine.

What is the month with the shortest days in Colombo?

The month with the shortest days in Colombo, Sri Lanka, is December, with an average of 11.7h of daylight.
Average temperature - 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).

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).

Average humidity - Colombo, Sri Lanka
Average rainfall - 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).

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).

Average daylight / Average sunshine - Colombo, Sri Lanka

Months with the longest days are June and July (Average daylight: 12.5h).
The month with the shortest days is December (Average daylight: 11.7h).

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

Average sunshine days - Colombo, Sri Lanka

The month with the most sunshine days is January (17.2 days).
Months with the least sunshine days are June and August (0.3 days).

Average UV index - Colombo, Sri Lanka

Months with the highest UV index are January, February, March, April, July, September, November and December (UV index 7).
Months with the lowest UV index are May, June, August and October (UV index 6).

Average visibility - Colombo, Sri Lanka

Months with the highest visibility are January, February, March, April and December (10km).
Months with the lowest visibility are May, June, July, August, September, October and November (9km).