Climate ▸Forecast ▸June ▸July ▸
JanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember

Mirissa, Sri Lanka - Weather and Climate

Mirissa features a tropical rainforest climate. The city has no true dry season, though it is noticeably drier in the months of January and February. Temperatures show little variation throughout the course of the year, with average maximum temperatures hovering at around 29°C.

Average maximum day and minimum night temperature

The climate in Mirissa remains fairly constant, offering very warm temperatures throughout the year. Average maximum daytime temperatures range from a very warm 31°C in March, the warmest time of the year, to a comfortable 29°C during cooler months like January.

At night, temperatures typically drop to an average of around 24°C during these months.

Check out our detailed temperature page for more information.

Temperature ranges by month

Precipitation and rainy days

Mirissa is known for its substantial rainfall, with annual precipitation reaching 2201 mm. Significant seasonal changes in precipitation occur throughout the year. During the wetter season, November receives heavy rainfall, averaging 283 mm of precipitation, recorded across 14 rainy days. In contrast, the drier season, February brings less rainfall, with 76 mm over 5 rainy days. For more details, please visit our Mirissa Precipitation page.

The mean monthly precipitation over the year, including rain, hail and snow

Sunshine over the year

While the amount of sunshine in Mirissa varies throughout the year, all seasons offer their own charm. Enjoy up to 9.0 hours of daily sun in March, and experience slightly darker atmosphere in September, with about 6.0 hours of daily sunlight.

Visit our detailed sunshine hours page for more information.

Monthly hours of sunshine

Data from: Galle, Sri Lanka (29 KM, 18 Miles).

Daily hours of sunshine

Data from: Galle, Sri Lanka (29 KM, 18 Miles).

Forecast for Mirissa

Friday
20 Jun
Rain
Rain
28°C
3 mm
Saturday
21 Jun
Light rain
Light rain
28°C
2.7 mm
Sunday
22 Jun
Rain
Rain
25°C
12 mm

Select a Month of Interest

Check the conditions for any month of the year.

The best time of year to visit Mirissa in Sri Lanka

Mirissa has high temperatures year round ranging between 29°C and 31°C.
Other facts from our historical weather data:
  • Which is the hottest month in Mirissa?
    March has an average maximum temperature of 31°C and is the hottest month of the year.
  • Which is the coolest month in Mirissa?
    The coolest month is January with an average maximum temperature of 29°C.
  • Which is the wettest month in Mirissa?
    November tops the wettest month list with 283 mm of rainfall.
  • Which is the driest month in Mirissa?
    February is the driest month with 76 mm of precipitation.
  • Which is the sunniest month in Mirissa?
    March is the sunniest month with an average of 270 hours of sunshine.

  • No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.