Colombo
Sri Lanka
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Colombo, Sri Lanka

Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
Statues on the Seema Malaka Temple in Colombo, Sri Lanka, overlooking the Beira Lake, and a view of the tall buildings of Colombo
January, the same as December, in Colombo, Sri Lanka, is a hot winter month, with average temperature ranging between max 30.9°C (87.6°F) and min 22.3°C (72.1°F). In Colombo, the average high-temperature in January is essentially the same as in December - a still hot 30.9°C (87.6°F). Weather in January »
The last month of the winter, February, is also a hot month in Colombo, Sri Lanka, with average temperature fluctuating between 22.6°C (72.7°F) and 31.2°C (88.2°F). In Colombo, the average high-temperature is practically the same as in January - a still hot 31.2°C (88.2°F). Weather in February »

March, the first month of the spring, in Colombo, is still a tropical month, with average temperature fluctuating between 31.7°C (89.1°F) and 23.7°C (74.7°F). In Colombo, the average high-temperature is practically the same as in February - a still hot 31.7°C (89.1°F). Weather in March »

April, like March, is another hot spring month in Colombo, Sri Lanka, with average temperature fluctuating between 31.8°C (89.2°F) and 24.6°C (76.3°F). With an average high-temperature of 31.8°C (89.2°F) and an average low-temperature of 24.6°C (76.3°F), April is the warmest month. Weather in April »

The last month of the spring, May, is another tropical month in Colombo, Sri Lanka, with average temperature fluctuating between 25.5°C (77.9°F) and 31.1°C (88°F). In May, the average high-temperature is practically the same as in April - a still hot 31.1°C (88°F). Weather in May »

June, the first month of the summer, in Colombo, is also a hot month, with average temperature varying between 30.4°C (86.7°F) and 25.5°C (77.9°F). In Colombo, the average high-temperature in June is essentially the same as in May - a still hot 30.4°C (86.7°F). Weather in June »

July, like June, is another tropical summer month in Colombo, Sri Lanka, with average temperature fluctuating between 25.2°C (77.4°F) and 30°C (86°F). The coldest months are July, August and October, with an average high-temperature of 30°C (86°F). Weather in July »

The last month of the summer, August, is another tropical month in Colombo, Sri Lanka, with average temperature ranging between min 25.1°C (77.2°F) and max 30°C (86°F). The coldest months are July, August and October, with an average high-temperature of 30°C (86°F). Weather in August »

The first month of the autumn, September, is also a hot month in Colombo, Sri Lanka, with temperature in the range of an average high of 30.2°C (86.4°F) and an average low of 24.8°C (76.6°F). In September, the average high-temperature is practically the same as in August - a still hot 30.2°C (86.4°F). Weather in September »

October, like September, is another hot autumn month in Colombo, Sri Lanka, with average temperature ranging between min 24°C (75.2°F) and max 30°C (86°F). The coldest months are July, August and October, with an average high-temperature of 30°C (86°F). Weather in October »

November, the last month of the autumn, in Colombo, is also a hot month, with average temperature ranging between max 30.1°C (86.2°F) and min 23.2°C (73.8°F). In November, the average high-temperature is essentially the same as in October - a still tropical 30.1°C (86.2°F). Weather in November »

December, the first month of the winter, in Colombo, is also a hot month, with average temperature fluctuating between 22.8°C (73°F) and 30.3°C (86.5°F). In December, the average high-temperature is relatively the same as in November - a still tropical 30.3°C (86.5°F). Weather in December »

What is the least humid month in Colombo?

January and February, with an average relative humidity of 69%, are the least humid months in Colombo, Sri Lanka.

How many days does it rain in Colombo?

Throughout the year, there are 145 rainfall days, and 2523.7mm (99.4") of precipitation is accumulated.

What is the driest month in Colombo?

The month with the least rainfall in Colombo is January when the rain falls for 5 days and typically collects 58.2mm (2.3") of precipitation.

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

Months with the lowest UV index are January, November and December, with an average maximum UV index of 11.

When is the highest UV index in Colombo?

February through October, with an average maximum UV index of 12, are months with the highest UV index.

What month has the most sunshine in Colombo?

The month with the most sunshine in Colombo, Sri Lanka, is March, with an average of 8.9h of sunshine.

What is the warmest month in Colombo?

With an average high-temperature of 31.8°C (89.2°F) and an average low-temperature of 24.6°C (76.3°F), April is the warmest month.

What month is the sea warmest in Colombo?

April is the month with the warmest seawater in Colombo, with an average sea temperature of 29.6°C (85.3°F). For any water activity, surface water temperatures between 25°C (77°F) and 29°C (84.2°F) are considered as excellent and extremely pleasant for lengthened periods.

What is the most humid month in Colombo?

With an average relative humidity of 79%, June is the most humid month in Colombo, Sri Lanka.

When are the longest days in Colombo?

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

What are the coldest months in Colombo?

The coldest months in Colombo are July, August and October, with an average high-temperature of 30°C (86°F).

When is the sea coldest in Colombo?

With an average sea temperature of 27.2°C (81°F), August is the month with the coldest seawater in Colombo. Water temperature between 25°C (77°F) and 29°C (84.2°F) is regarded as very warm and enjoyable by all. With these temperatures, water activities are pleasurable, without feeling uncomfortable for prolonged periods.

What is the month with the least sunshine in Colombo?

September has the least sunshine of the year, with an average of 6.3h of sunshine.

What is the rainiest month in Colombo?

The month with the most rainfall in Colombo, Sri Lanka, is November when the rain falls for 15 days and typically aggregates up to 414.4mm (16.3") of precipitation.

What is the month with the shortest days in Colombo?

December has the shortest days of the year in Colombo, Sri Lanka, with an average of 11.7h of daylight.
Average temperature - Colombo, Sri Lanka
Average humidity - Colombo, Sri Lanka
Average rainfall - Colombo, Sri Lanka

The wettest month (with the highest rainfall) is November (414.4mm).
The driest month (with the lowest rainfall) is January (58.2mm).

Average rainfall days - Colombo, Sri Lanka

The month with the highest number of rainy days is October (17 days).
Months with the lowest number of rainy days are January and February (5 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 shortest days is December (Average daylight: 11.7h).

The month with most sunshine is March (Average sunshine: 8.9h).
The month with least sunshine is September (Average sunshine: 6.3h).

Average UV index - Colombo, Sri Lanka

Months with the highest UV index are February, March, April, May, June, July, August, September and October (UV index 12).
Months with the lowest UV index are January, November and December (UV index 11).