SeasonMapMirissa weather by month
Sri Lanka
The best time to visit Mirissa is January to March — 89/100 in February, 31°C and 11 rainy days. The best season is the dry season, December to April (83/100 on average).
The worst month is November at 64/100 — sweltering, soaked, clean air. See November →
Updated September 2026 · climate normals from ERA5 reanalysis
Planning the wider trip? Best time to visit Sri Lanka →
Mirissa, month by month
Comfort score out of 100 for the kind of trip Mirissa is best for, the average high, rainy days and hours of sun a day from the climate normals, and how busy it tends to be.
| Month | Score | Tier | High | Rain | Sun | Crowds | On |
|---|---|---|---|---|---|---|---|
| JanJanuary | 83 | A | 30°C | 16 d | 10 h | Peak | 3 |
| FebFebruary | 89 | A | 31°C | 11 d | 11 h | Peak | 2 |
| MarMarch | 85 | A | 32°C | 20 d | 11 h | Peak | 2 |
| AprApril | 79 | B | 31°C | 26 d | 11 h | Peak | 3 |
| MayMay | 66 | C | 30°C | 29 d | 10 h | Quiet | 1 |
| JunJune | 77 | B | 30°C | 27 d | 11 h | Shoulder | 1 |
| JulJuly | 81 | A | 29°C | 25 d | 11 h | Shoulder | 1 |
| AugAugust | 80 | A | 29°C | 25 d | 10 h | Busy | 1 |
| SepSeptember | 76 | B | 29°C | 27 d | 10 h | Busy | 1 |
| OctOctober | 70 | B | 29°C | 26 d | 9 h | Quiet | — |
| NovNovember | 64 | C | 30°C | 25 d | 9 h | Busy | 2 |
| DecDecember | 78 | B | 30°C | 21 d | 10 h | Peak | 3 |
What's on in Mirissa through the year
Festivals, natural spectacles, holidays and the seasons to watch out for — curated and sourced. The month pages carry the detail.
Crowds in Mirissa in February
How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.
Peak crowdsSouth coast surf season, February break in Sri Lanka, school holidays in 2 of the markets that fill it(estimated)
Peak crowdsBusyShoulder seasonQuiet