Average annual temperature is 27.7 °C
Absolute maximum temperature: 38.6 °C
Absolute minimum temperature: 21.3 °C
Number of sunny days: 88 days
Number of rainy days: 277 days
Look at detailed online map of Thennamaranvadiya
* Weather data for Thennamaranvadiya 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) | 28.4 | 29.3 | 32.9 | 35.6 | 36.0 | 37.6 | 38.6 | 38.1 | 35.9 | 34.7 | 30.4 | 32.9 |
| Average daytime temperature (°C) | 27.1 | 27.8 | 29.9 | 32.0 | 33.5 | 35.2 | 35.8 | 36.7 | 34.2 | 31.7 | 29.0 | 28.5 |
| Average temperature (°C) | 25.2 | 25.7 | 27.0 | 28.1 | 28.7 | 30.2 | 30.0 | 29.7 | 28.6 | 26.9 | 26.0 | 26.2 |
| Average night temperature (°C) | 23.6 | 23.7 | 24.5 | 25.1 | 25.8 | 26.8 | 26.5 | 25.7 | 25.4 | 24.0 | 23.8 | 24.3 |
| Absolute minimum temperature (°C) | 21.7 | 21.3 | 23.4 | 23.5 | 24.0 | 25.8 | 25.5 | 24.7 | 24.2 | 23.3 | 22.9 | 23.0 |
| 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) | 9.2 | 10.1 | 10.8 | 10.6 | 9.2 | 10.5 | 9.5 | 10.9 | 10.1 | 9.8 | 7.7 | 7.8 |
| Precipitation (mm) | 142 | 98 | 58 | 113 | 118 | 20 | 35 | 132 | 151 | 369 | 517 | 396 |
| Sunny days | 12 | 12 | 10 | 15 | 10 | 8 | 10 | 6 | 4 | 1 | 0 | 0 |
| Rainy days | 19 | 16 | 21 | 15 | 21 | 22 | 21 | 25 | 26 | 30 | 30 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Thennamaranvadiya is at