Average annual temperature is 25.5 °C
Absolute maximum temperature: 43.7 °C
Absolute minimum temperature: 5.6 °C
Number of sunny days: 222 days
Number of rainy days: 143 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) | 25.8 | 31.2 | 34.9 | 42.9 | 39.6 | 43.7 | 35.9 | 34.6 | 35.3 | 33.1 | 31.0 | 28.7 |
| Average daytime temperature (°C) | 21.0 | 26.7 | 30.8 | 36.9 | 35.7 | 39.4 | 33.6 | 32.5 | 32.3 | 30.9 | 28.4 | 24.6 |
| Average temperature (°C) | 14.5 | 19.8 | 24.1 | 30.0 | 29.8 | 33.7 | 29.9 | 29.1 | 28.7 | 25.7 | 22.2 | 17.9 |
| Average night temperature (°C) | 9.4 | 13.4 | 17.9 | 23.1 | 24.2 | 28.1 | 26.9 | 26.3 | 25.7 | 21.1 | 16.8 | 12.5 |
| Absolute minimum temperature (°C) | 5.6 | 9.9 | 15.8 | 17.5 | 21.3 | 24.9 | 25.3 | 24.7 | 24.1 | 17.3 | 13.1 | 9.0 |
| 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 | 11.3 | 12.0 | 12.8 | 13.4 | 13.7 | 13.6 | 13.0 | 12.3 | 11.5 | 10.9 | 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) | 8.3 | 10.1 | 9.9 | 10.2 | 10.8 | 10.6 | 8.7 | 8.2 | 8.5 | 9.4 | 9.2 | 8.5 |
| Precipitation (mm) | 0 | 0 | 37 | 6 | 23 | 116 | 243 | 347 | 195 | 85 | 0 | 5 |
| Sunny days | 30 | 28 | 21 | 24 | 22 | 16 | 2 | 1 | 0 | 20 | 30 | 28 |
| Rainy days | 1 | 0 | 10 | 6 | 9 | 14 | 29 | 30 | 30 | 11 | 0 | 3 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Siwān is at