Average annual temperature is 17.5 °C
Absolute maximum temperature: 40.8 °C
Absolute minimum temperature: -10.2 °C
Number of sunny days: 297 days
Number of rainy days: 61 days
Number of snow days: 7 days
Look at detailed online map of Bīrtīānchī
* Weather data for Bīrtīānchī Iran is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 12.6 | 17.9 | 23.5 | 27.6 | 35.6 | 40.3 | 40.8 | 39.6 | 37.5 | 32.3 | 21.9 | 17.8 |
| Average daytime temperature (°C) | 5.9 | 11.4 | 19.6 | 24.2 | 30.5 | 36.3 | 38.7 | 35.3 | 32.9 | 26.9 | 18.5 | 14.1 |
| Average temperature (°C) | 0.3 | 4.4 | 12.4 | 17.3 | 23.2 | 29.0 | 31.6 | 28.7 | 25.7 | 19.2 | 11.3 | 6.4 |
| Average night temperature (°C) | -4.6 | -1.8 | 4.4 | 9.1 | 14.8 | 20.3 | 23.0 | 20.4 | 17.1 | 10.8 | 4.2 | -0.7 |
| Absolute minimum temperature (°C) | -10.2 | -5.7 | 0.9 | -0.5 | 8.5 | 15.1 | 20.5 | 15.3 | 11.9 | 7.2 | -1.0 | -3.1 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.3 | 11.0 | 12.0 | 13.0 | 13.8 | 14.3 | 14.1 | 13.3 | 12.4 | 11.4 | 10.5 | 10.0 |
| Daylight minimum duration (h) | 10.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 8.5 | 9.5 | 10.7 | 12.0 | 12.7 | 12.4 | 11.9 | 11.0 | 9.8 | 9.0 | 8.6 |
| Precipitation (mm) | 44 | 53 | 16 | 1 | 3 | 3 | 0 | 0 | 0 | 9 | 22 | 9 |
| Sunny days | 18 | 16 | 21 | 25 | 24 | 27 | 31 | 31 | 30 | 24 | 22 | 28 |
| Rainy days | 6 | 12 | 10 | 5 | 7 | 3 | 0 | 0 | 0 | 7 | 8 | 3 |
| Snow days | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Bīrtīānchī is at