January in Trincomalee averages 28C by day and 24C at night, with 142 mm of rain over about 15 wet days. It is the 4th wettest month of the year. January brings the best weather Trincomalee offers all year.
What to Expect
| Detail | Info |
|---|---|
| Temperature | 28C by day, 24C at night |
| Rainfall | 142 mm, about 15 wet days |
Averages for 2015 to 2024 from the Open-Meteo weather archive.
Events and Festivals
- Thai Pusam festival at Koneswaram Temple
What to Do This Season
- Blue whale watching at peak season
- Perfect beach weather at Uppuveli and Nilaveli
- Clear visibility for Fort Frederick exploration
What to Watch Out For
- Hotel prices elevated due to peak season
- Whale watching boats fill quickly
What to Wear
Light cotton clothing, sun hat, reef-safe sunscreen
Is It Worth Visiting Now?
Yes - perfect weather conditions with calm seas ideal for whale watching and beach activities
More on Trincomalee
Flexible on dates? Compare Trincomalee in December and Trincomalee in February. The best time to visit Trincomalee sets all twelve months side by side. For what is open and worth it, see the things to do in Trincomalee. The main Trincomalee page covers costs and transport.
We plan trips to Trincomalee and the rest of Sri Lanka. Tell us your dates and we will put a route together. Our routes are on the tours page.

