Average annual temperature is 27.2 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: 19.4 °C
Number of sunny days: 89 days
Number of rainy days: 276 days
Look at detailed online map of Thachchadampan
* Weather data for Thachchadampan 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) | 28.7 | 30.8 | 35.1 | 36.7 | 37.3 | 37.1 | 37.2 | 38.0 | 35.9 | 35.2 | 31.6 | 31.3 |
| Average daytime temperature (°C) | 27.6 | 28.9 | 31.8 | 34.3 | 33.1 | 34.5 | 34.7 | 36.1 | 34.2 | 32.5 | 29.3 | 28.5 |
| Average temperature (°C) | 24.2 | 24.7 | 26.6 | 28.0 | 28.3 | 29.8 | 29.6 | 29.4 | 28.8 | 26.7 | 25.3 | 25.3 |
| Average night temperature (°C) | 21.5 | 21.7 | 23.2 | 23.9 | 25.2 | 26.6 | 26.2 | 25.5 | 25.5 | 23.6 | 22.8 | 23.2 |
| Absolute minimum temperature (°C) | 19.4 | 19.7 | 22.3 | 21.8 | 23.1 | 24.9 | 25.3 | 24.4 | 23.9 | 22.5 | 22.0 | 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 | 11.8 | 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) | 9.3 | 10.1 | 10.9 | 10.5 | 8.9 | 10.6 | 9.5 | 10.7 | 10.2 | 9.5 | 7.0 | 7.3 |
| Precipitation (mm) | 114 | 105 | 69 | 104 | 90 | 34 | 29 | 68 | 51 | 263 | 513 | 346 |
| Sunny days | 14 | 14 | 6 | 9 | 7 | 6 | 15 | 13 | 3 | 1 | 0 | 1 |
| Rainy days | 17 | 14 | 25 | 21 | 24 | 24 | 16 | 18 | 27 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thachchadampan is at