Average annual temperature is 27.8 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: 21.3 °C
Number of sunny days: 127 days
Number of rainy days: 238 days
Look at detailed online map of Iranaithivu
* Weather data for Iranaithivu 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) | 28.7 | 30.3 | 32.0 | 33.3 | 31.8 | 32.0 | 32.5 | 32.8 | 31.3 | 32.2 | 31.5 | 29.6 |
| Average daytime temperature (°C) | 27.5 | 28.3 | 30.3 | 31.8 | 30.7 | 30.8 | 30.9 | 31.4 | 30.2 | 30.1 | 28.9 | 28.3 |
| Average temperature (°C) | 25.5 | 25.8 | 27.6 | 28.8 | 29.1 | 29.2 | 28.9 | 29.0 | 28.6 | 27.8 | 26.4 | 26.5 |
| Average night temperature (°C) | 23.8 | 23.6 | 25.2 | 26.0 | 27.7 | 28.1 | 27.5 | 27.2 | 27.0 | 25.6 | 24.3 | 24.8 |
| Absolute minimum temperature (°C) | 21.3 | 21.4 | 24.1 | 24.6 | 24.4 | 26.2 | 26.8 | 26.7 | 25.4 | 23.6 | 23.5 | 23.6 |
| 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) | 11.6 | 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) | 9.7 | 10.3 | 11.1 | 10.9 | 9.2 | 10.4 | 9.8 | 11.2 | 10.6 | 10.1 | 8.0 | 8.4 |
| Precipitation (mm) | 53 | 125 | 23 | 80 | 96 | 48 | 33 | 2 | 27 | 116 | 383 | 224 |
| Sunny days | 18 | 18 | 9 | 7 | 15 | 14 | 12 | 27 | 2 | 2 | 1 | 2 |
| Rainy days | 13 | 10 | 22 | 23 | 16 | 16 | 19 | 4 | 28 | 29 | 29 | 29 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Iranaithivu is at