Mirissa weather in February
February in Mirissa: sweltering, a little rain, with muggy air — fine if you can take 36°C afternoons.
Updated September 2026 · climate normals from ERA5 reanalysis
#1 of 12 months in Mirissa · #218 of 1413 destinations to visit in February · comfort 89/100 (tier A)
- Days
- 31°C
- Nights
- 24°C
- Wet days
- 11
- Sun
- 10.6 h
- Humidity
- 78%
- Daylight
- 12 h

Traveller notes on Mirissa in February
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.
Other months in Mirissa
Mirissa-forum threads on April weather call it the last reliably good month on the south coast before the monsoon takes over - calm seas still holding for swimming and beginner surfing, though posters describe it as a genuine shoulder season where conditions can start slipping outside the reef-protected stretches of beach. Showers become more likely after the middle of the month, roughly a month ahead of when the real southwest monsoon breaks, typically arriving as a short afternoon or evening burst rather than an all-day soak. Regulars still rate plenty of sunshine across most days, humidity climbing but not yet unbearable. The standing advice is to front-load a south-coast beach stay for the first half of April if a trip's dates are flexible, since the back half carries noticeably higher odds of a wet afternoon. The record: 31.2C days feeling like a punishing 38C, 25.6C nights, a notably high 169mm across 25.6 days, 85 percent humidity, a 30.3C sea and 10.5 hours of sun.
Mirissa-forum threads on November weather place it inside the second inter-monsoon season - genuinely the wettest stretch of the year by rainfall total, and posters call conditions unsettled rather than predictable week to week. The one consistent pattern regulars point to: rain tends to arrive later in the day, leaving mornings sunny more often than the wet-season reputation implies, and the island still logs real total sunshine across the month. Sea conditions are the bigger practical concern - not calm enough most days for swimming on the open coast, though a few sheltered stretches of beach stay swimmable. Regulars steer visitors wanting reliable beach weather toward January through mid-March instead. The record: 29.6C days feeling like a sticky 35C, 24.4C nights, a notably high 306mm across 25.1 days, 87 percent humidity, an 8.8-hour sun day and a 29.3C sea - the wettest entry on Mirissa's whole calendar.
Hikkaduwa-and-Mirissa forum threads on July weather describe the south coast as manageable through the off-season rather than ideal: decent conditions most days, but evening showers are common and the sea runs genuinely rough, making swimming and snorkeling harder than in the calmer months. Mirissa gets called out specifically for having reef-protected sections of beach that stay swimmable even when the open coast doesn't, a real edge over neighboring beaches this time of year. Posters describe a reliable pattern - good weather most mornings, showers arriving later in the day in short bursts rather than settling in for hours. The record: 29.2C days feeling like a sticky 33C, 25.6C nights, 140mm across a notably high 25.4 days, an 85 percent humidity, a 26.5C sea and 10.5 hours of sun - the wettest, roughest entry on this destination's whole calendar, exactly matching the off-season framing.
January is the start of the good half of Mirissa's whale season: the south coast runs November to May, and regulars say sightings improve into January and February, which is the window they name for blue whales. Two practical points come with it. The boats leave early - reporting around half past six for a seven o'clock start, three and a half to four hours out - which is the reason to stay in Mirissa rather than Galle or Colombo. And the weather is not settled at the turn of the year: rain can hang on into mid-January, with the first half of the day the reliable part on this coast. Our row's 133.8mm across 16.3 days is that. The record: 30C days that feel like 36C, 23.8C nights, humidity 82 percent and a 27.6C sea.
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Mirissa climate normals — February
Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.
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
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).
Best weatherMirissa's weather peaks January–March, best around February.
February includes Blue whale season.
Best weatherFair weatherToughest weather
What's on in Mirissa in February
Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.
- 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 February — FAQ
- Is February a good time to visit Mirissa?
- February in Mirissa: sweltering, a little rain, with muggy air — fine if you can take 36°C afternoons. It ranks #1 of 12 months for Mirissa on SeasonMap's comfort score (89/100).
- What is the weather like in Mirissa in February?
- In February, Mirissa averages a daily high of 31.1°C and a low of 24.2°C, with about 69.9 mm of rain over roughly 11.2 rainy days.
- What is the air quality in Mirissa in February?
- Mirissa has a mean US Air Quality Index of about 59 in February.
Within 300 km: Nuwara Eliya's Adam's Peak pilgrimage season around 5 Dec – 10 May, and Colombo's Blue whales off Mirissa around 1 Nov – 15 Apr.