Average annual temperature is 27.7 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 22.6 °C
Number of sunny days: 76 days
Number of rainy days: 289 days
Look at detailed online map of Trincomalee
* Weather data for Trincomalee Sri Lanka is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 28.6 | 29.8 | 32.0 | 36.0 | 37.0 | 37.3 | 37.3 | 37.5 | 35.5 | 33.5 | 30.1 | 32.0 |
| Average daytime temperature (°C) | 27.2 | 28.0 | 29.8 | 32.2 | 33.7 | 35.9 | 35.4 | 36.1 | 33.9 | 30.9 | 28.8 | 28.4 |
| Average temperature (°C) | 25.4 | 25.9 | 27.1 | 28.4 | 28.8 | 30.4 | 29.9 | 29.5 | 28.3 | 26.7 | 26.1 | 26.3 |
| Average night temperature (°C) | 23.9 | 24.0 | 24.7 | 25.6 | 25.8 | 26.7 | 26.5 | 25.9 | 25.4 | 24.3 | 24.0 | 24.4 |
| Absolute minimum temperature (°C) | 22.6 | 23.0 | 23.0 | 23.9 | 23.9 | 25.7 | 25.6 | 25.0 | 24.4 | 23.5 | 23.4 | 23.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 |
| Daylight mean duration (h) | 11.7 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.6 | 12.4 | 12.2 | 11.9 | 11.7 | 11.6 |
| Daylight minimum duration (h) | 11.0 | 11.0 | 11.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 11.0 | 11.0 | 11.0 |
| Sunshine mean duration (h) | 8.9 | 9.8 | 10.8 | 10.5 | 9.2 | 10.7 | 9.4 | 10.9 | 9.6 | 9.9 | 8.0 | 8.4 |
| Precipitation (mm) | 161 | 97 | 63 | 61 | 105 | 16 | 31 | 84 | 184 | 374 | 454 | 357 |
| Sunny days | 9 | 10 | 8 | 10 | 8 | 10 | 8 | 7 | 4 | 2 | 0 | 0 |
| Rainy days | 22 | 18 | 23 | 20 | 23 | 20 | 23 | 24 | 26 | 29 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Trincomalee is at