Average annual temperature is 27.4 °C
Absolute maximum temperature: 38.5 °C
Absolute minimum temperature: 18.5 °C
Number of sunny days: 100 days
Number of rainy days: 265 days
Look at detailed online map of Sinna Aiyamperumal
* Weather data for Sinna Aiyamperumal 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) | 29.6 | 31.6 | 36.0 | 37.8 | 36.9 | 37.0 | 37.1 | 38.5 | 35.6 | 35.5 | 31.4 | 31.1 |
| Average daytime temperature (°C) | 28.0 | 29.4 | 32.6 | 35.2 | 32.8 | 34.0 | 34.7 | 36.5 | 33.8 | 32.1 | 29.7 | 28.7 |
| Average temperature (°C) | 24.0 | 24.7 | 27.0 | 28.5 | 28.5 | 29.7 | 29.7 | 30.0 | 28.8 | 26.8 | 25.5 | 25.5 |
| Average night temperature (°C) | 20.8 | 21.0 | 23.0 | 24.0 | 25.4 | 26.6 | 26.3 | 25.8 | 25.6 | 23.6 | 22.9 | 23.3 |
| Absolute minimum temperature (°C) | 18.5 | 18.5 | 22.2 | 22.1 | 23.0 | 25.6 | 25.5 | 24.9 | 24.7 | 22.1 | 22.6 | 22.9 |
| 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) | 11.7 | 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) | 9.0 | 10.1 | 10.8 | 10.4 | 8.9 | 10.5 | 9.4 | 11.0 | 10.0 | 9.2 | 6.8 | 7.6 |
| Precipitation (mm) | 80 | 90 | 46 | 129 | 104 | 41 | 25 | 42 | 66 | 278 | 467 | 244 |
| Sunny days | 16 | 15 | 11 | 8 | 10 | 9 | 13 | 15 | 1 | 1 | 0 | 1 |
| Rainy days | 15 | 13 | 20 | 22 | 21 | 21 | 18 | 16 | 29 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Sinna Aiyamperumal is at