Average annual temperature is 28.1 °C
Absolute maximum temperature: 40.5 °C
Absolute minimum temperature: 17.5 °C
Number of sunny days: 134 days
Number of rainy days: 231 days
Look at detailed online map of Arachchalūr
* Weather data for Arachchalūr 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) | 33.6 | 37.5 | 38.0 | 40.5 | 39.7 | 39.2 | 38.0 | 39.5 | 37.2 | 39.1 | 34.3 | 33.3 |
| Average daytime temperature (°C) | 32.1 | 34.6 | 35.9 | 37.5 | 36.2 | 36.6 | 33.9 | 37.5 | 35.1 | 34.1 | 30.8 | 31.1 |
| Average temperature (°C) | 25.4 | 26.8 | 28.8 | 30.6 | 29.8 | 29.5 | 27.8 | 29.7 | 28.2 | 28.2 | 25.8 | 26.1 |
| Average night temperature (°C) | 19.5 | 19.8 | 22.3 | 24.6 | 25.0 | 24.7 | 23.7 | 24.4 | 24.0 | 23.6 | 22.0 | 21.8 |
| Absolute minimum temperature (°C) | 17.9 | 18.2 | 17.5 | 23.0 | 23.6 | 23.4 | 22.7 | 23.8 | 22.9 | 22.4 | 20.2 | 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) | 11.6 | 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 | 10.4 | 11.1 | 11.1 | 10.0 | 9.9 | 9.0 | 11.0 | 10.1 | 10.3 | 9.1 | 8.8 |
| Precipitation (mm) | 2 | 19 | 42 | 55 | 122 | 31 | 101 | 85 | 76 | 165 | 222 | 34 |
| Sunny days | 28 | 25 | 21 | 16 | 6 | 3 | 2 | 9 | 0 | 6 | 5 | 13 |
| Rainy days | 3 | 3 | 10 | 14 | 25 | 27 | 29 | 22 | 30 | 25 | 25 | 18 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Arachchalūr is at