January in Mirissa averages 29C by day and 23C at night, with 121 mm of rain over about 18 wet days. It is the 3rd driest month of the year. January brings perfect whale watching conditions to Mirissa with calm seas and clear skies.
What to Expect
| Detail | Info |
|---|---|
| Temperature | 29C by day, 23C at night |
| Rainfall | 121 mm, about 18 wet days |
Averages for 2015 to 2024 from the Open-Meteo weather archive.
Events and Festivals
- Duruthu Perahera (full moon celebration)
- Thai Pusam (Tamil festival)
What to Do This Season
- Blue whale watching tours
- Calm seas perfect for snorkeling
- Clear skies for Coconut Tree Hill photography
What to Watch Out For
- Book accommodation well ahead
- Whale watching tours fill up quickly
- Higher prices across all services
What to Wear
Light cotton clothing, sun hat, reef-safe sunscreen
Is It Worth Visiting Now?
Yes - peak whale watching season with calm seas and minimal rain
More on Mirissa
Flexible on dates? Compare Mirissa in December and Mirissa in February. The best time to visit Mirissa sets all twelve months side by side. For what is open and worth it, see the things to do in Mirissa. The main Mirissa page covers costs and transport.
We plan trips to Mirissa and the rest of Sri Lanka. Tell us your dates and we will put a route together. Our routes are on the tours page.