Average annual temperature is 27.5 °C
Absolute maximum temperature: 38.0 °C
Absolute minimum temperature: 20.2 °C
Number of sunny days: 50 days
Number of rainy days: 315 days
Look at detailed online map of Iruthayapuram West
* Weather data for Iruthayapuram West 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 | 29.8 | 31.7 | 34.2 | 35.4 | 36.4 | 38.0 | 36.9 | 34.5 | 32.0 | 30.8 | 31.0 |
| Average daytime temperature (°C) | 27.6 | 28.1 | 29.5 | 31.8 | 32.3 | 34.9 | 35.3 | 34.2 | 32.2 | 29.8 | 28.8 | 28.6 |
| Average temperature (°C) | 25.1 | 25.6 | 26.8 | 28.2 | 28.4 | 29.9 | 29.9 | 29.6 | 27.6 | 26.4 | 26.0 | 26.1 |
| Average night temperature (°C) | 22.6 | 22.9 | 24.0 | 25.0 | 25.4 | 26.3 | 25.7 | 25.6 | 24.9 | 24.0 | 23.7 | 24.1 |
| Absolute minimum temperature (°C) | 20.2 | 20.5 | 22.9 | 23.5 | 23.7 | 25.5 | 25.0 | 24.2 | 23.6 | 23.0 | 23.0 | 23.4 |
| 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 | 11.9 | 12.1 | 12.3 | 12.5 | 12.6 | 12.5 | 12.4 | 12.2 | 12.0 | 11.8 | 11.7 |
| 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) | 9.1 | 9.6 | 10.0 | 10.7 | 9.7 | 10.7 | 9.9 | 11.1 | 9.8 | 9.5 | 8.4 | 8.2 |
| Precipitation (mm) | 196 | 131 | 90 | 80 | 127 | 52 | 52 | 44 | 280 | 469 | 479 | 413 |
| Sunny days | 4 | 6 | 7 | 7 | 6 | 4 | 4 | 8 | 1 | 2 | 1 | 0 |
| Rainy days | 27 | 22 | 24 | 23 | 25 | 26 | 27 | 23 | 29 | 29 | 29 | 31 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iruthayapuram West is at