Kalutara
Sri Lanka
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Kalutara, Sri Lanka

The best months for a swim in Kalutara, Sri Lanka, are January and February, with a perfect temperature - varying between 25°C (77°F) and 29°C (84.2°F), and scarce rainfall.

January, the same as December, in Kalutara, Sri Lanka, is another hot winter month, with average temperature ranging between min 22°C (71.6°F) and max 31°C (87.8°F). The ideal sea water temperature of 27.7°C (81.9°F) and only 5 rainfall days, with 73mm (2.9") of accumulated rainfall, make January the best time for swimming and other water activities. Weather in January »

The last month of the winter, February, is also a hot month in Kalutara, Sri Lanka, with temperature in the range of an average high of 31°C (87.8°F) and an average low of 23°C (73.4°F). The ideal sea water temperature of 28.3°C (82.9°F) and only 5 rainfall days, with 91mm (3.6") of accumulated rainfall, make February the best time for swimming and other water activities. Weather in February »

The first month of the spring, March, is still a hot month in Kalutara, Sri Lanka, with average temperature varying between 31°C (87.8°F) and 24°C (75.2°F). In Kalutara, the average high-temperature in March remains the same as in February - a still hot 31°C (87.8°F). Weather in March »

April, the same as March, in Kalutara, Sri Lanka, is another tropical spring month, with average temperature ranging between min 24°C (75.2°F) and max 32°C (89.6°F). With an average high-temperature of 32°C (89.6°F) and an average low-temperature of 24°C (75.2°F), April is the warmest month. Weather in April »

May, the last month of the spring, in Kalutara, is another tropical month, with average temperature varying between 31°C (87.8°F) and 25°C (77°F). In May, the average high-temperature is relatively the same as in April - a still hot 31°C (87.8°F). Weather in May »

June, the first month of the summer, in Kalutara, is still a hot month, with average temperature ranging between min 25°C (77°F) and max 30°C (86°F). June through December, with an average high-temperature of 30°C (86°F), are the coldest months. Weather in June »

July, like June, is a hot summer month in Kalutara, Sri Lanka, with average temperature fluctuating between 30°C (86°F) and 25°C (77°F). The coldest months are June through December, with an average high-temperature of 30°C (86°F). In Kalutara, Sri Lanka, during July, the rain falls for 11 days and regularly aggregates up to 180mm (7.1") of precipitation. Weather in July »

The last month of the summer, August, is another tropical month in Kalutara, Sri Lanka, with average temperature varying between 30°C (86°F) and 25°C (77°F). The coldest months are June through December, with an average high-temperature of 30°C (86°F). In August, in Kalutara, the rain falls for 10 days. Weather in August »

September, the first month of the autumn, in Kalutara, is still a tropical month, with average temperature fluctuating between 25°C (77°F) and 30°C (86°F). June through December, with an average high-temperature of 30°C (86°F), are the coldest months. Weather in September »

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

The last month of the autumn, November, is another tropical month in Kalutara, Sri Lanka, with average temperature fluctuating between 30°C (86°F) and 23°C (73.4°F). The coldest months are June through December, with an average high-temperature of 30°C (86°F). Weather in November »

The first month of the winter, December, is also a hot month in Kalutara, Sri Lanka, with average temperature ranging between min 23°C (73.4°F) and max 30°C (86°F). June through December, with an average high-temperature of 30°C (86°F), are the coldest months. Weather in December »

How many days does it rain in Kalutara?

In Kalutara, Sri Lanka, during the entire year, the rain falls for 131 days and collects up to 2659mm (104.7") of precipitation.

What is the driest month in Kalutara?

January is the month with the least rainfall in Kalutara, Sri Lanka. Rain falls for 5 days and accumulates 73mm (2.9") of precipitation.

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

January, November and December, with an average maximum UV index of 11, are months with the lowest UV index in Kalutara, Sri Lanka.

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

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

What month has the most sunshine in Kalutara?

March has the most sunshine of the year, with an average of 9h of sunshine.

What is the warmest month in Kalutara?

The warmest month in Kalutara, Sri Lanka, is April, with an average high-temperature of 32°C (89.6°F) and an average low-temperature of 24°C (75.2°F).

When is the sea warmest in Kalutara?

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

What is the wettest month in Kalutara?

The month with the most rainfall in Kalutara is May when the rain falls for 13 days and typically aggregates up to 388mm (15.3") of precipitation.

What is the month with the least sunshine in Kalutara?

May through October, with an average of 6h of sunshine, are months with the least sunshine in Kalutara, Sri Lanka.

What are the coldest months in Kalutara?

June through December, with an average high-temperature of 30°C (86°F), are the coldest months in Kalutara.

When are the longest days in Kalutara?

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

When is the sea coldest in Kalutara?

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

What is the month with the shortest days in Kalutara?

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

The warmest month (with the highest average high temperature) is April (32°C).
Months with the lowest average high temperature are June, July, August, September, October, November and December (30°C).

Months with the highest average low temperature are May, June, July, August and September (25°C).
The coldest month (with the lowest average low temperature) is January (22°C).

Average rainfall - Kalutara, Sri Lanka
Average rainfall days - Kalutara, Sri Lanka

The month with the highest number of rainy days is October (15 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature - Kalutara, 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 - Kalutara, 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: 9h).
Months with least sunshine are May, June, July, August, September and October (Average sunshine: 6).

Average UV index - Kalutara, 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).