Average annual temperature is 26.8 °C
Absolute maximum temperature: 36.5 °C
Absolute minimum temperature: 19.2 °C
Number of sunny days: 64 days
Number of rainy days: 301 days
Look at detailed online map of Thammitagama
* Weather data for Thammitagama 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) | 30.3 | 32.3 | 34.5 | 35.5 | 33.9 | 33.4 | 35.0 | 36.5 | 33.2 | 33.0 | 31.7 | 31.2 |
| Average daytime temperature (°C) | 28.9 | 30.2 | 32.4 | 33.4 | 31.7 | 32.0 | 31.6 | 34.5 | 31.2 | 30.8 | 30.0 | 29.4 |
| Average temperature (°C) | 24.3 | 25.3 | 27.0 | 27.7 | 27.7 | 28.2 | 27.9 | 28.8 | 26.9 | 26.1 | 25.5 | 25.6 |
| Average night temperature (°C) | 21.0 | 21.5 | 23.3 | 24.0 | 24.9 | 25.4 | 25.3 | 25.2 | 24.0 | 23.3 | 23.1 | 23.2 |
| Absolute minimum temperature (°C) | 19.2 | 19.6 | 22.0 | 22.7 | 23.0 | 23.9 | 24.1 | 24.3 | 23.0 | 22.3 | 22.4 | 22.6 |
| 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 | 12.5 | 12.4 | 12.2 | 11.9 | 11.8 | 11.7 |
| 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) | 9.2 | 9.9 | 10.7 | 10.3 | 9.1 | 10.6 | 9.5 | 11.1 | 9.3 | 8.5 | 7.5 | 7.8 |
| Precipitation (mm) | 63 | 91 | 97 | 106 | 123 | 41 | 58 | 17 | 107 | 266 | 405 | 223 |
| Sunny days | 14 | 14 | 6 | 4 | 0 | 1 | 8 | 16 | 0 | 0 | 0 | 1 |
| Rainy days | 17 | 14 | 25 | 26 | 31 | 29 | 23 | 15 | 30 | 31 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thammitagama is at