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

October 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
October, the same as September, is a moderately hot autumn month in Mirissa, Sri Lanka, 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

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

Sea temperature

Months with the coldest seawater are January, February, June through October and December, with an average sea temperature of 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.

Daylight

In October, the average length of the day is 12h.

Sunshine

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

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 value of 11, and more, symbolizes an extreme threat to health from the exposure to the Sun's UV radiation for the ordinary person.
In October, the average maximum UV index of 12 translate into the following recommendations:
Practice all-important precautions. Light skin people may get burned in less than 5 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Even on cloudy days, a sunscreen with a minimum 30 sun protection factor should be generously applied and frequently re-applied, including after every swim or outdoor exercise. 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 in Mirissa are August through October and December, with an average high-temperature of 29°C (84.2°F).

What is the temperature in October in Mirissa?

In October, in Mirissa, Sri Lanka, the average high-temperature is 29°C (84.2°F), and the average low-temperature is 24°C (75.2°F).

How many days does it rain in October in Mirissa?

In Mirissa, Sri Lanka, in October, it is raining for 13 days, with typically 305mm (12") of accumulated precipitation.

What is the wettest month in Mirissa?

The month with the most rainfall in Mirissa, Sri Lanka, is October when the rain falls for 13 days and typically aggregates up to 305mm (12") of precipitation.

When is 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, Sri Lanka. For swimming, diving, and other water activities, temperatures between 25°C (77°F) and 29°C (84.2°F) are perceived as very enjoyable and pleasurable for prolonged periods without feeling uncomfortable.

What is the sea water temperature in October in Mirissa?

In Mirissa, Sri Lanka, the average seawater temperature in October 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.

How many hours of daylight does Mirissa have in October?

In October, the average length of the day in Mirissa is 12h.

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 October in Mirissa?

In Mirissa, Sri Lanka, the average sunshine in October is 6h.

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

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

How high is the UV index in October in Mirissa?

The average daily maximum UV index in October in Mirissa, Sri Lanka, is 12. A UV Index value of 11, and more, symbolizes an extreme health threat from unsafe exposure to the Sun's UV rays.
Average temperature in October - Mirissa, Sri Lanka
  • Average high temperature in October: 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 October: 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 October - Mirissa, Sri Lanka
  • Average rainfall in October: 305mm

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

Average rainfall days in October - Mirissa, Sri Lanka
  • Average rainfall days in October: 13 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 October - Mirissa, Sri Lanka
  • Average sea temperature in October: 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 October / Average sunshine in October - Mirissa, Sri Lanka
  • Average daylight in October: 12h

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 October: 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 October - Mirissa, Sri Lanka
  • Average UV index in October: 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).