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

August 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
August, the last month of the summer, in Mirissa, is another warm month, with average temperature fluctuating between 24°C (75.2°F) and 29°C (84.2°F).

Temperature

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

Rainfall

In August, in Mirissa, the rain falls for 9 days. Throughout August, 149mm (5.9") of precipitation is accumulated. In Mirissa, during the entire year, the rain falls for 116 days and collects up to 2216mm (87.2") of precipitation.

Sea temperature

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

Daylight

In Mirissa, Sri Lanka, the average length of the day is 12.3h.

Sunshine

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

UV index

January through October, with an average maximum UV index of 12, are months with the highest UV index in Mirissa. A UV Index reading of 11, and higher, represents an ultimate health vulnerability from the exposure to the Sun's UV rays for ordinary individuals.
The daily maximum UV index of 12 interpret into the following advice:
Take all necessary precautions, as unprotected skin can burn in minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. A broad-spectrum sunscreen of SPF 30+ should be liberally applied and re-applied every two hours, and immediately after an outdoor workout or a swim. Beware! The strength of the UV rays is significantly increased by the reflection of the water and sand.

What is the coldest month in Mirissa?

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

What is the temperature in August in Mirissa?

The average high-temperature, in August, is 29°C (84.2°F), while the average low-temperature is 24°C (75.2°F).

How many days does it rain in August in Mirissa?

In Mirissa, Sri Lanka, during August, the rain falls for 9 days and regularly aggregates up to 149mm (5.9") 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 in Mirissa. 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 water temperature in August in Mirissa?

In Mirissa, Sri Lanka, the average seawater temperature in August is 28°C (82.4°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 average length of the day in August in Mirissa?

The average length of the day in August is 12.3h.

What is the month with the least sunshine in Mirissa?

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

How long on average sun shines in August in Mirissa?

In August, the average sunshine is 6h.

What is the month 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 is the UV index reading in August in Mirissa?

In August, the average daily maximum UV index is 12. A UV Index reading of 11, and higher, represents an ultimate hazard to health from the exposure to the Sun's UV rays.
Average temperature in August - Mirissa, Sri Lanka
  • Average high temperature in August: 29°C

Warmest months (with the highest average high temperature) are March and April (31°C).
Months with the lowest average high temperature are August, September, October and December (29°C).

  • Average low temperature in August: 24°C

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

Average rainfall in August - Mirissa, Sri Lanka
  • Average rainfall in August: 149mm

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

Average rainfall days in August - Mirissa, Sri Lanka
  • Average rainfall days in August: 9 days

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 in August - Mirissa, Sri Lanka
  • Average sea temperature in August: 28°C

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 in August / Average sunshine in August - Mirissa, Sri Lanka
  • Average daylight in August: 12.3h

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

  • Average sunshine in August: 6h

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 in August - Mirissa, Sri Lanka
  • Average UV index in August: 12

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).