Average annual temperature is 24.8 °C
Absolute maximum temperature: 42.1 °C
Absolute minimum temperature: 5.1 °C
Number of sunny days: 230 days
Number of rainy days: 135 days
Look at detailed online map of Siwān
* Weather data for Siwān 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) | 25.0 | 31.6 | 34.3 | 41.9 | 41.7 | 42.1 | 35.3 | 34.2 | 35.6 | 34.1 | 30.3 | 28.2 |
| Average daytime temperature (°C) | 20.2 | 26.8 | 30.7 | 35.5 | 36.2 | 38.1 | 33.2 | 32.8 | 32.4 | 31.1 | 27.6 | 23.6 |
| Average temperature (°C) | 13.5 | 19.4 | 23.8 | 28.3 | 29.6 | 32.8 | 29.6 | 29.1 | 28.7 | 25.4 | 21.3 | 16.5 |
| Average night temperature (°C) | 8.5 | 13.1 | 17.5 | 21.0 | 23.2 | 27.4 | 26.6 | 25.9 | 25.7 | 20.2 | 15.7 | 11.0 |
| Absolute minimum temperature (°C) | 5.1 | 9.1 | 15.8 | 17.1 | 19.8 | 24.0 | 25.2 | 24.1 | 24.2 | 16.7 | 12.5 | 7.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 |
| Daylight mean duration (h) | 10.7 | 11.2 | 12.0 | 12.8 | 13.5 | 13.8 | 13.6 | 13.1 | 12.3 | 11.5 | 10.8 | 10.5 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.4 | 10.1 | 10.0 | 10.5 | 10.5 | 10.4 | 8.4 | 8.7 | 9.2 | 9.9 | 9.0 | 8.5 |
| Precipitation (mm) | 0 | 0 | 36 | 15 | 43 | 137 | 303 | 262 | 205 | 8 | 12 | 7 |
| Sunny days | 30 | 28 | 21 | 22 | 22 | 18 | 0 | 2 | 5 | 24 | 28 | 30 |
| Rainy days | 1 | 0 | 10 | 8 | 9 | 12 | 31 | 29 | 25 | 7 | 2 | 1 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siwān is at