Average annual temperature is 25.9 °C
Absolute maximum temperature: 45.2 °C
Absolute minimum temperature: 6.1 °C
Number of sunny days: 225 days
Number of rainy days: 140 days
Look at detailed online map of Bihar
* Weather data for Bihar 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) | 26.9 | 32.5 | 35.5 | 43.4 | 43.0 | 45.2 | 37.5 | 35.2 | 34.4 | 33.5 | 30.6 | 28.4 |
| Average daytime temperature (°C) | 22.0 | 27.5 | 31.6 | 37.9 | 38.4 | 40.6 | 34.6 | 32.6 | 32.0 | 30.9 | 28.5 | 24.0 |
| Average temperature (°C) | 15.1 | 20.2 | 24.8 | 30.9 | 31.7 | 34.7 | 30.7 | 29.0 | 28.4 | 25.8 | 22.2 | 17.6 |
| Average night temperature (°C) | 9.7 | 13.3 | 18.3 | 23.5 | 25.1 | 29.0 | 27.3 | 26.2 | 25.8 | 21.2 | 16.6 | 12.7 |
| Absolute minimum temperature (°C) | 6.1 | 9.7 | 16.1 | 18.7 | 22.2 | 25.4 | 25.8 | 25.1 | 24.3 | 17.3 | 11.8 | 9.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 11.0 | 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) | 10.8 | 11.3 | 12.0 | 12.8 | 13.4 | 13.7 | 13.5 | 13.0 | 12.3 | 11.6 | 10.9 | 10.6 |
| Daylight minimum duration (h) | 10.0 | 11.0 | 11.0 | 12.0 | 13.0 | 13.0 | 13.0 | 12.0 | 11.0 | 11.0 | 10.0 | 10.0 |
| Sunshine mean duration (h) | 8.7 | 10.4 | 10.0 | 10.6 | 11.0 | 11.0 | 9.5 | 8.1 | 8.3 | 9.3 | 9.7 | 8.1 |
| Precipitation (mm) | 0 | 0 | 28 | 11 | 26 | 90 | 238 | 214 | 266 | 93 | 0 | 20 |
| Sunny days | 30 | 28 | 24 | 25 | 21 | 15 | 4 | 2 | 0 | 21 | 28 | 27 |
| Rainy days | 1 | 0 | 7 | 5 | 10 | 15 | 27 | 29 | 30 | 10 | 2 | 4 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Bihar is at