Average annual temperature is 27.9 °C
Absolute maximum temperature: 38.4 °C
Absolute minimum temperature: 20.0 °C
Number of sunny days: 114 days
Number of rainy days: 251 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) | 28.2 | 30.1 | 33.9 | 36.4 | 37.1 | 37.0 | 37.6 | 38.4 | 36.4 | 35.9 | 31.2 | 31.1 |
| Average daytime temperature (°C) | 27.2 | 28.2 | 31.2 | 34.2 | 33.2 | 34.6 | 35.2 | 36.3 | 34.3 | 32.4 | 29.4 | 28.4 |
| Average temperature (°C) | 24.8 | 25.1 | 27.2 | 28.8 | 29.0 | 30.3 | 30.3 | 30.3 | 29.5 | 27.5 | 26.0 | 26.0 |
| Average night temperature (°C) | 22.5 | 22.3 | 24.1 | 24.8 | 25.9 | 27.1 | 26.8 | 26.2 | 26.2 | 24.2 | 23.6 | 24.0 |
| Absolute minimum temperature (°C) | 20.6 | 20.0 | 22.6 | 22.9 | 23.6 | 25.8 | 26.1 | 25.2 | 25.3 | 22.9 | 22.9 | 23.3 |
| 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) | 9.4 | 10.2 | 11.0 | 10.7 | 9.2 | 10.6 | 9.5 | 11.2 | 10.5 | 10.1 | 7.4 | 7.6 |
| Precipitation (mm) | 125 | 155 | 35 | 93 | 75 | 30 | 17 | 46 | 44 | 166 | 504 | 326 |
| Sunny days | 14 | 15 | 11 | 6 | 12 | 17 | 15 | 17 | 2 | 3 | 1 | 1 |
| Rainy days | 17 | 13 | 20 | 24 | 19 | 13 | 16 | 14 | 28 | 28 | 29 | 30 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Periyakulam is at