Average annual temperature is 26.8 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: 17.9 °C
Number of sunny days: 52 days
Number of rainy days: 313 days
Look at detailed online map of Tanamalwila Division
* Weather data for Tanamalwila Division 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) | 33.1 | 33.7 | 34.5 | 36.1 | 35.7 | 35.7 | 35.8 | 37.5 | 32.1 | 31.0 | 30.6 | 30.3 |
| Average daytime temperature (°C) | 30.9 | 31.1 | 32.3 | 33.2 | 32.2 | 34.6 | 33.7 | 35.6 | 30.4 | 29.3 | 29.2 | 28.9 |
| Average temperature (°C) | 25.6 | 26.0 | 26.8 | 27.3 | 27.7 | 29.2 | 28.5 | 29.3 | 26.2 | 25.1 | 25.0 | 25.4 |
| Average night temperature (°C) | 21.2 | 21.9 | 23.2 | 23.5 | 24.8 | 25.6 | 25.0 | 25.1 | 23.7 | 22.7 | 22.4 | 22.9 |
| Absolute minimum temperature (°C) | 17.9 | 20.3 | 21.8 | 22.3 | 23.5 | 24.6 | 23.4 | 23.5 | 23.1 | 21.6 | 21.7 | 21.9 |
| 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) | 11.8 | 11.9 | 12.1 | 12.3 | 12.4 | 12.5 | 12.5 | 12.3 | 12.2 | 12.0 | 11.8 | 11.8 |
| 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) | 9.6 | 9.9 | 9.8 | 9.8 | 9.5 | 10.9 | 10.2 | 11.1 | 9.2 | 7.4 | 7.5 | 8.0 |
| Precipitation (mm) | 87 | 123 | 110 | 167 | 129 | 36 | 42 | 45 | 227 | 483 | 533 | 336 |
| Sunny days | 10 | 11 | 3 | 1 | 5 | 4 | 4 | 9 | 0 | 0 | 0 | 5 |
| Rainy days | 21 | 17 | 28 | 29 | 26 | 26 | 27 | 22 | 30 | 31 | 30 | 26 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Tanamalwila Division is at