Average annual temperature is 27.8 °C
Absolute maximum temperature: 35.1 °C
Absolute minimum temperature: 20.1 °C
Number of sunny days: 113 days
Number of rainy days: 252 days
Look at detailed online map of Thatchchanthoppu
* Weather data for Thatchchanthoppu 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) | 28.5 | 31.0 | 33.7 | 35.1 | 32.2 | 32.8 | 33.4 | 33.6 | 31.9 | 33.6 | 31.0 | 29.7 |
| Average daytime temperature (°C) | 27.7 | 28.5 | 31.2 | 32.8 | 31.0 | 31.3 | 31.0 | 31.6 | 30.5 | 30.9 | 29.2 | 28.5 |
| Average temperature (°C) | 25.1 | 25.5 | 27.9 | 29.2 | 29.2 | 29.4 | 29.0 | 29.0 | 28.7 | 28.0 | 26.3 | 26.3 |
| Average night temperature (°C) | 22.7 | 22.8 | 25.2 | 26.2 | 27.7 | 28.0 | 27.5 | 27.1 | 27.0 | 25.4 | 23.9 | 24.5 |
| Absolute minimum temperature (°C) | 20.5 | 20.1 | 24.0 | 24.8 | 24.3 | 26.0 | 26.7 | 26.5 | 25.1 | 23.5 | 22.9 | 23.8 |
| 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) | 11.6 | 11.8 | 12.1 | 12.3 | 12.6 | 12.7 | 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) | 9.8 | 10.2 | 11.1 | 11.1 | 9.4 | 10.3 | 9.6 | 11.3 | 10.6 | 10.5 | 8.2 | 8.3 |
| Precipitation (mm) | 38 | 127 | 24 | 71 | 80 | 66 | 38 | 3 | 45 | 131 | 559 | 255 |
| Sunny days | 15 | 17 | 12 | 10 | 14 | 13 | 7 | 22 | 1 | 1 | 0 | 1 |
| Rainy days | 16 | 11 | 19 | 20 | 17 | 17 | 24 | 9 | 29 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thatchchanthoppu is at