Average annual temperature is 28.5 °C
Absolute maximum temperature: 40.4 °C
Absolute minimum temperature: 18.4 °C
Number of sunny days: 98 days
Number of rainy days: 267 days
Look at detailed online map of Idaikkulam
* Weather data for Idaikkulam 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) | 33.8 | 35.3 | 36.7 | 37.8 | 39.2 | 40.2 | 40.0 | 40.4 | 36.6 | 34.8 | 32.8 | 32.2 |
| Average daytime temperature (°C) | 31.1 | 32.3 | 34.2 | 35.0 | 35.0 | 37.9 | 37.1 | 36.9 | 34.1 | 32.6 | 30.5 | 29.7 |
| Average temperature (°C) | 25.5 | 25.9 | 28.5 | 29.7 | 29.8 | 31.5 | 30.8 | 30.4 | 29.4 | 27.9 | 26.2 | 26.2 |
| Average night temperature (°C) | 20.9 | 20.7 | 23.8 | 25.0 | 26.0 | 26.9 | 26.5 | 25.9 | 25.7 | 24.3 | 23.1 | 23.3 |
| Absolute minimum temperature (°C) | 18.5 | 18.4 | 21.1 | 23.7 | 24.0 | 25.9 | 24.6 | 24.5 | 24.1 | 22.5 | 22.7 | 21.7 |
| 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 | 12.7 | 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) | 10.1 | 10.2 | 11.1 | 11.2 | 9.8 | 10.2 | 9.3 | 11.3 | 10.6 | 9.9 | 8.1 | 8.3 |
| Precipitation (mm) | 15 | 50 | 42 | 73 | 99 | 45 | 54 | 77 | 121 | 195 | 420 | 164 |
| Sunny days | 23 | 21 | 12 | 9 | 9 | 4 | 6 | 6 | 1 | 2 | 1 | 4 |
| Rainy days | 8 | 7 | 19 | 21 | 22 | 26 | 25 | 25 | 29 | 29 | 29 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Idaikkulam is at