Average annual temperature is 28.0 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 17.4 °C
Number of sunny days: 110 days
Number of rainy days: 255 days
Look at detailed online map of Vellānaikkottai
* Weather data for Vellānaikkottai 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) | 33.5 | 37.0 | 39.0 | 40.5 | 39.6 | 39.6 | 37.4 | 40.1 | 35.7 | 36.1 | 31.1 | 32.5 |
| Average daytime temperature (°C) | 31.5 | 33.2 | 36.0 | 37.0 | 36.1 | 37.2 | 33.9 | 37.9 | 33.0 | 32.5 | 29.3 | 29.1 |
| Average temperature (°C) | 25.2 | 26.3 | 28.8 | 29.9 | 30.0 | 30.9 | 28.8 | 30.6 | 27.8 | 27.1 | 25.2 | 25.2 |
| Average night temperature (°C) | 20.0 | 20.2 | 23.2 | 24.2 | 25.2 | 26.0 | 25.0 | 24.5 | 24.2 | 23.2 | 22.2 | 21.5 |
| Absolute minimum temperature (°C) | 17.4 | 18.1 | 19.8 | 22.5 | 23.0 | 24.3 | 23.1 | 22.9 | 23.0 | 21.7 | 21.1 | 19.4 |
| 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 | 11.8 | 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) | 10.3 | 10.5 | 11.2 | 10.7 | 9.9 | 10.5 | 7.8 | 11.2 | 7.6 | 9.8 | 8.6 | 8.8 |
| Precipitation (mm) | 39 | 48 | 32 | 131 | 63 | 16 | 107 | 45 | 190 | 210 | 332 | 235 |
| Sunny days | 17 | 23 | 11 | 7 | 6 | 13 | 14 | 11 | 3 | 0 | 2 | 3 |
| Rainy days | 14 | 5 | 20 | 23 | 25 | 17 | 17 | 20 | 27 | 31 | 28 | 28 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Vellānaikkottai is at