Average annual temperature is 28.8 °C
Absolute maximum temperature: 41.2 °C
Absolute minimum temperature: 17.9 °C
Number of sunny days: 140 days
Number of rainy days: 225 days
Look at detailed online map of Chettaiyūr
* Weather data for Chettaiyūr 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) | 34.7 | 38.2 | 39.5 | 41.2 | 40.0 | 40.2 | 39.0 | 40.3 | 37.8 | 39.6 | 34.9 | 34.5 |
| Average daytime temperature (°C) | 32.7 | 35.2 | 36.9 | 38.3 | 36.7 | 37.5 | 35.1 | 38.4 | 35.5 | 34.5 | 31.4 | 32.1 |
| Average temperature (°C) | 25.9 | 27.2 | 29.5 | 31.3 | 30.5 | 30.5 | 28.9 | 30.8 | 29.0 | 28.6 | 26.3 | 26.7 |
| Average night temperature (°C) | 19.8 | 20.1 | 22.8 | 25.2 | 25.8 | 25.7 | 24.8 | 25.6 | 24.9 | 23.9 | 22.5 | 22.1 |
| Absolute minimum temperature (°C) | 17.9 | 18.0 | 18.1 | 23.5 | 24.2 | 24.9 | 23.8 | 24.5 | 23.8 | 22.5 | 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) | 11.6 | 11.8 | 12.1 | 12.4 | 12.6 | 12.8 | 12.7 | 12.5 | 12.2 | 11.9 | 11.6 | 11.5 |
| 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) | 9.8 | 10.3 | 11.0 | 11.0 | 10.0 | 9.8 | 8.8 | 10.8 | 10.0 | 10.3 | 9.0 | 8.6 |
| Precipitation (mm) | 1 | 15 | 75 | 62 | 118 | 19 | 77 | 56 | 96 | 157 | 234 | 44 |
| Sunny days | 28 | 25 | 19 | 16 | 9 | 5 | 5 | 10 | 1 | 4 | 4 | 14 |
| Rainy days | 3 | 3 | 12 | 14 | 22 | 25 | 26 | 21 | 29 | 27 | 26 | 17 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Chettaiyūr is at