Mirissa
Sri Lanka
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Mirissa, Sri Lanka

A row of palm trees with boats under, along Tropical Beach in Mirissa, Sri Lanka, with a sneak view of water approaching the beautiful brown sandy shore
A row of palm trees with boats under, along Tropical Beach in Mirissa, Sri Lanka, with a sneak view of water approaching the beautiful brown sandy shore
The best months for a swim in Mirissa, 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 in Mirissa, Sri Lanka, is a tropical winter month, with average temperature varying between 30°C (86°F) and 22°C (71.6°F). The ideal sea water temperature of 28°C (82.4°F) and only 5 rainfall days, with 89mm (3.5") of accumulated rainfall, make January the best time for swimming and other water activities. Weather in January »

February, the last month of the winter, in Mirissa, is another hot month, with temperature in the range of an average low of 23°C (73.4°F) and an average high of 30°C (86°F). The ideal sea water temperature of 28°C (82.4°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 Mirissa, Sri Lanka, with average temperature fluctuating between 31°C (87.8°F) and 24°C (75.2°F). The warmest months are March and April, with an average high-temperature of 31°C (87.8°F). Weather in March »

April, like March, is another hot spring month in Mirissa, Sri Lanka, with temperature in the range of an average low of 24°C (75.2°F) and an average high of 31°C (87.8°F). March and April, with an average high-temperature of 31°C (87.8°F), are the warmest months. In Mirissa, during April, the rain falls for 11 days and regularly aggregates up to 207mm (8.1") of precipitation. Weather in April »

May, the last month of the spring, in Mirissa, is also a hot month, with average temperature varying between 30°C (86°F) and 25°C (77°F). In Mirissa, the average high-temperature in May is almost the same as in April - a still hot 30°C (86°F). Weather in May »

The first month of the summer, June, is still a hot month in Mirissa, Sri Lanka, with average temperature varying between 25°C (77°F) and 30°C (86°F). In Mirissa, the average high-temperature remains the same as in May - a still tropical 30°C (86°F). Weather in June »

July, the same as June, in Mirissa, Sri Lanka, is a hot summer month, with average temperature ranging between max 30°C (86°F) and min 24°C (75.2°F). In Mirissa, the average high-temperature remains equal as in June - a still hot 30°C (86°F). Weather in July »

August, the last month of the summer, in Mirissa, is another warm month, with average temperature fluctuating between 29°C (84.2°F) and 24°C (75.2°F). August through October and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. In Mirissa, in August, it is raining for 9 days, with typically 149mm (5.9") of accumulated precipitation. Weather in August »

September, the first month of the autumn, in Mirissa, is also a moderately hot month, with average temperature fluctuating between 24°C (75.2°F) and 29°C (84.2°F). The coldest months are August through October and December, with an average high-temperature of 29°C (84.2°F). Weather in September »

October, the same as September, is another warm autumn month in Mirissa, Sri Lanka, with average temperature varying between 24°C (75.2°F) and 29°C (84.2°F). August through October and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. The month with the most rainfall in Mirissa is October when the rain falls for 13 days and typically aggregates up to 305mm (12") of precipitation. Weather in October »

November, the last month of the autumn, in Mirissa, is a hot month, with temperature in the range of an average high of 30°C (86°F) and an average low of 23°C (73.4°F). In November, the average high-temperature is practically the same as in October - a tropical 30°C (86°F). Weather in November »

The first month of the winter, December, is also a moderately hot month in Mirissa, Sri Lanka, with average temperature varying between 29°C (84.2°F) and 23°C (73.4°F). August through October and December, with an average high-temperature of 29°C (84.2°F), are the coldest months. Weather in December »

How many days does it rain in Mirissa?

Throughout the year, there are 116 rainfall days, and 2216mm (87.2") of precipitation is accumulated.

What is the driest month in Mirissa?

January is the month with the least rainfall in Mirissa. Rain falls for 5 days and accumulates 89mm (3.5") of precipitation.

What months are the sea coldest in Mirissa?

January, February, June through October and December, with an average sea temperature of 28°C (82.4°F), are months with the coldest seawater.

What is the month with the shortest days in Mirissa?

Months with the shortest days in Mirissa are January and December, with an average of 11.8h of daylight.

What are the months with the highest UV index in Mirissa?

Months with the highest UV index in Mirissa, Sri Lanka, are January through October, with an average maximum UV index of 12.

What are the months with the most sunshine in Mirissa?

February and March, with an average of 8h of sunshine, are months with the most sunshine.

What is the warmest month in Mirissa?

Warmest months are March and April, with an average high-temperature of 31°C (87.8°F).

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

April is the month with the warmest seawater, with an average sea temperature of 30°C (86°F).

What is the month with the least sunshine in Mirissa?

Months with the least sunshine are May through December, with an average of 6h of sunshine.

When are the longest days in Mirissa?

With an average of 12.5h of daylight, June has the longest days of the year in Mirissa.

What is the coldest month in Mirissa?

August through October and December, with an average high-temperature of 29°C (84.2°F), are the coldest months in Mirissa, Sri Lanka.

What is the wettest month in Mirissa?

October is the month with the most rainfall. Rain falls for 13 days and accumulates 305mm (12") of precipitation.

When is the lowest UV index in Mirissa?

Months with the lowest UV index are November and December, with an average maximum UV index of 11.
Average temperature - Mirissa, Sri Lanka
Average rainfall - Mirissa, Sri Lanka

The wettest month (with the highest rainfall) is October (305mm).
The driest month (with the lowest rainfall) is January (89mm).

Average rainfall days - Mirissa, Sri Lanka

The month with the highest number of rainy days is November (14 days).
Months with the lowest number of rainy days are January and February (5 days).

Average sea temperature - Mirissa, Sri Lanka

The best month for swimming (with the highest average sea temperature) is April (30°C).
Coldest months (with the lowest average sea temperature) are January, February, June, July, August, September, October and December (28°C).

Average daylight / Average sunshine - Mirissa, Sri Lanka

The month with the longest days is June (Average daylight: 12.5h).
Months with shortest days are January and December (Average daylight: 11.8h).

Months with most sunshine are February and March (Average sunshine: 8h).
Months with least sunshine are May, June, July, August, September, October, November and December (Average sunshine: 6).

Average UV index - Mirissa, Sri Lanka

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