Average annual temperature is 28.0 °C
Absolute maximum temperature: 41.0 °C
Absolute minimum temperature: 18.1 °C
Number of sunny days: 109 days
Number of rainy days: 256 days
Look at detailed online map of Idyankulam
* Weather data for Idyankulam India is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 34.4 | 37.4 | 39.8 | 40.9 | 41.0 | 39.6 | 37.9 | 39.6 | 35.6 | 36.9 | 31.3 | 32.3 |
| Average daytime temperature (°C) | 32.2 | 33.7 | 36.5 | 37.5 | 36.6 | 37.1 | 34.1 | 37.6 | 32.7 | 32.7 | 29.9 | 29.3 |
| Average temperature (°C) | 25.8 | 26.4 | 29.2 | 30.0 | 30.1 | 30.5 | 28.7 | 30.4 | 27.5 | 27.0 | 25.3 | 25.4 |
| Average night temperature (°C) | 20.7 | 20.2 | 23.8 | 24.7 | 25.6 | 25.8 | 24.8 | 25.0 | 24.1 | 23.3 | 22.4 | 22.0 |
| Absolute minimum temperature (°C) | 18.4 | 18.1 | 21.8 | 23.0 | 23.7 | 24.6 | 23.4 | 23.8 | 23.3 | 22.2 | 20.9 | 19.7 |
| 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) | 10.1 | 10.3 | 10.8 | 10.6 | 9.9 | 10.5 | 8.6 | 11.2 | 8.7 | 9.6 | 8.3 | 8.7 |
| Precipitation (mm) | 38 | 42 | 43 | 140 | 53 | 32 | 88 | 63 | 78 | 322 | 507 | 245 |
| Sunny days | 22 | 23 | 9 | 8 | 6 | 5 | 10 | 14 | 1 | 3 | 2 | 6 |
| Rainy days | 9 | 5 | 22 | 22 | 25 | 25 | 21 | 17 | 29 | 28 | 28 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Idyankulam is at