SeasonMapMirissa weather in April
Sri Lanka
April in Mirissa: sweltering, soaked, with clean air — fine if you can take 26 rainy days.
#6 of 12 months in Mirissa · #667 of 1383 destinations to visit in April · comfort 79/100 (tier B)
Updated September 2026 · climate normals from ERA5 reanalysis
Traveller notes on Mirissa in April
Other months in Mirissa
Mirissa's forum calls February close to ideal — fewer crowds, good weather, and prime whale-watching season, which regulars say runs November through April. Sightings aren't guaranteed (recent reports put the odds around 50%), though dolphins show up far more reliably; tours head out around 6:45am, and regulars say the earliest departure gives the calmest seas and the best shot.
Add your own note from Mirissa's card on the map.
Mirissa climate normals — April
| Daytime high | 31°C / 88°F | 🔥 sweltering |
|---|---|---|
| Nighttime low | 26°C / 78°F | |
| Feels like (high) | 38°C / 100°F | |
| Sea temperature | 30°C / 87°F | ♨️ bath-warm |
| Rainfall | 169 mm / 6.6 in | ⛈ soaked |
| Rainy days | 26 days | |
| Humidity | 85% | 💦 very humid |
| Dew point | 25°C / 77°F | |
| Sunshine | 10.5 h/day | |
| Daylight | 12.3 h | |
| Wind | 14 km/h / 9 mph | |
| Air quality (US AQI) | 50 | 🍃 good |
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
Crowds in Mirissa in April
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 crowdsSinhala and Tamil New Year, South coast surf season, Sinhala & Tamil New Year break in Sri Lanka(estimated)
Peak crowdsBusyShoulder seasonQuiet
Best months for Mirissa's weather
Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).
Fair weatherMirissa's weather peaks January–March, best around February.
Best weatherFair weatherToughest weather
What's on in Mirissa in April
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- Holiday
Sinhala and Tamil New Year
10–18 AprSchool holidaysClosuresCrowdedThe island's own holiday rather than a foreign one: shops shut for days, the Matara road fills with families, and the beach belongs to Sri Lankan day trippers instead of the usual crowd. Source ↗
- Nature
Blue whale season
1 Nov – 15 AprBook earlyBoats leave the harbour before dawn for the shelf edge an hour or two out, and sightings are close to routine between December and March. Pick an operator that keeps its distance; plenty do not.
- Season
South coast surf season
1 Nov – 15 AprCrowdedThe clean swell is round the corner at Weligama, which is where every board hire and beginner lesson on this stretch happens. Mirissa's own bay is for swimming rather than surfing.
Nearby, and something's on
Within 300 km of Mirissa — a day trip or a short hop — with something on this month. Never part of the comfort score.
Where is Mirissa?
Mirissa in April — FAQ
- Is April a good time to visit Mirissa?
- April in Mirissa: sweltering, soaked, with clean air — fine if you can take 26 rainy days. It ranks #6 of 12 months for Mirissa on SeasonMap's comfort score (79/100).
- What is the weather like in Mirissa in April?
- In April, Mirissa averages a daily high of 31.2°C and a low of 25.6°C, with about 168.7 mm of rain over roughly 25.6 rainy days.
- What is the air quality in Mirissa in April?
- Mirissa has a mean US Air Quality Index of about 50 in April.
Other months in Mirissa
Compare Mirissa in April
Warmer or cooler than Mirissa in April
Similar destinations in South Asia — April
Within 300 km: Nuwara Eliya's The April Season on 1–30 Apr, and Colombo's Blue whales off Mirissa around 1 Nov – 15 Apr.