April in Trincomalee averages 32C by day and 26C at night, with 48 mm of rain over about 10 wet days. It is the 4th driest month of the year. April brings warmer temperatures and New Year celebrations to Trincomalee. While whale watching season continues, the focus shifts to enjoying warm ocean temperatures and cultural festivities.
What to Expect
| Detail | Info |
|---|---|
| Temperature | 32C by day, 26C at night |
| Rainfall | 48 mm, about 10 wet days |
Averages for 2015 to 2024 from the Open-Meteo weather archive.
Events and Festivals
- Sinhala and Tamil New Year celebrations
- Water blessing ceremonies at temples
What to Do This Season
- Warm water perfect for swimming and diving
- New Year festivities across the region
- Good whale watching still possible
What to Watch Out For
- Getting noticeably hotter
- Humidity increasing
- More frequent afternoon rain
What to Wear
Loose-fitting clothes, sandals, light scarf for temple visits
Is It Worth Visiting Now?
Yes - good weather continues with warm temperatures ideal for water activities
More on Trincomalee
Flexible on dates? Compare Trincomalee in March and Trincomalee in May. 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.

