Mirissa Weather in October
Mirissa in October sees high temperatures, with highs around 30°C (86°F) and overnight lows of 25°C (77°F). With the rainy season in full effect, expect around 260 mm (10 in) of rainfall and regular showers throughout the month.
Rainfall in Mirissa in October
As part of the rainy season, Mirissa sees around 13 days of rain in October, with an average of 260 mm (10 in). Rain during the rainy season here tends to be intense rather than just persistent drizzle. Expect significant downpours, often in the late afternoon.
Temperature in Mirissa in October
In October, Mirissa sees high temperatures, with highs of 30°C (86°F). Nights drop to around 25°C (77°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. With overnight lows of 25°C (77°F), evenings and nights remain warm. Light clothing and an open window or fan can help you sleep comfortably.
Sunshine in Mirissa in October
Expect a lot of sunshine this month, with about 200 hours of sun. Showers typically arrive in the late afternoon or evening, keeping mornings and early afternoons sunny. Even during the wet season, there's plenty of sunshine for sightseeing.October in Mirissa can still be great, but if you prefer pleasant temperatures along with dry and sunny conditions, our weather planner can help you explore other options in the world.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mirissa's climate page.
Mirissa Temperature in October
Min Temperature
25°C (77°F)
Max Temperature
30°C (86°F)
Chance of Rain
44%
Precipitation
260 mm (10 in)
Rainy days
13 days
Sunshine
200 hours *
Percentage Sunshine
*
Daily Historical Temperatures
45-year average (1976-2025)
Based on our historical records, temperatures in Mirissa typically stay consistent throughout October, with daily highs averaging around 30°C (86°F). Nights are warm, with lows around 25°C (77°F).
Average temperatures in October
Daily Historical Precipitation
45-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in October
Historical weather for Mirissa in October
Browse day-by-day weather records for Mirissa spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mirissa historical weather extremes in October
Based on 25 years of weather observations in Mirissa between 2000 and 2025, these are the recorded extremes.
- The warmest day in October was on October 25, 2020, with a maximum of 36°C (97°F).
- On October 25, 2000, Mirissa saw its coldest October day with temperatures maxing out at 25°C (77°F).
- The lowest overnight temperature recorded in October was 19°C (66°F) (October 28, 2021).
Best Places in Sri Lanka in October
Find out more about the weather in Sri Lanka and which places have the best travel conditions in this month. See all of Sri Lanka in October →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Mirissa in October
Warm weather calls for comfortable, breathable clothing in October. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Also bring a poncho, it will rain a lot! Waterproof everything you can. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.What To Do in Mirissa in October
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Sri Lanka, check out our Mirissa's climate page.
See the full Mirissa climate overview or explore weather in Sri Lanka.
