Average annual temperature is 27.2 °C
Absolute maximum temperature: 37.9 °C
Absolute minimum temperature: 18.9 °C
Number of sunny days: 100 days
Number of rainy days: 265 days
Look at detailed online map of Periyakulam
* Weather data for Periyakulam 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) | 28.9 | 30.8 | 35.8 | 37.7 | 36.9 | 37.5 | 37.0 | 37.9 | 35.7 | 35.1 | 31.5 | 31.9 |
| Average daytime temperature (°C) | 27.7 | 29.1 | 32.1 | 34.7 | 32.9 | 34.5 | 34.6 | 36.0 | 34.0 | 32.2 | 29.4 | 28.5 |
| Average temperature (°C) | 24.0 | 24.7 | 26.7 | 28.2 | 28.3 | 29.8 | 29.6 | 29.5 | 28.7 | 26.6 | 25.2 | 25.3 |
| Average night temperature (°C) | 21.2 | 21.4 | 23.1 | 24.0 | 25.2 | 26.5 | 26.2 | 25.5 | 25.4 | 23.5 | 22.7 | 23.2 |
| Absolute minimum temperature (°C) | 18.9 | 19.3 | 22.3 | 22.0 | 23.1 | 24.9 | 25.4 | 24.4 | 24.2 | 22.4 | 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 | 10.2 | 10.9 | 10.6 | 8.9 | 10.5 | 9.5 | 10.9 | 10.1 | 9.3 | 6.9 | 7.5 |
| Precipitation (mm) | 106 | 92 | 50 | 92 | 97 | 33 | 19 | 68 | 60 | 277 | 531 | 293 |
| Sunny days | 16 | 14 | 7 | 8 | 10 | 9 | 18 | 14 | 2 | 1 | 0 | 1 |
| Rainy days | 15 | 14 | 24 | 22 | 21 | 21 | 13 | 17 | 28 | 30 | 30 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Periyakulam is at