Average annual temperature is 12.9 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -24.8 °C
Number of sunny days: 291 days
Number of rainy days: 66 days
Number of snow days: 8 days
Look at detailed online map of Bīyūn-e Kohneh
* Weather data for Bīyūn-e Kohneh 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) | 9.4 | 14.4 | 20.7 | 28.6 | 28.6 | 35.8 | 34.0 | 31.6 | 34.4 | 27.2 | 20.0 | 17.6 |
| Average daytime temperature (°C) | 1.0 | 7.4 | 15.8 | 20.7 | 23.7 | 29.1 | 28.9 | 27.1 | 23.0 | 20.7 | 15.2 | 10.7 |
| Average temperature (°C) | -4.0 | 2.8 | 10.3 | 14.3 | 17.4 | 23.1 | 23.5 | 21.4 | 16.5 | 14.0 | 9.8 | 5.4 |
| Average night temperature (°C) | -9.4 | -1.7 | 4.7 | 7.5 | 11.2 | 16.2 | 17.6 | 15.4 | 10.3 | 7.5 | 4.5 | 0.9 |
| Absolute minimum temperature (°C) | -24.8 | -14.0 | -0.1 | -2.3 | 3.3 | 12.0 | 15.0 | 10.5 | 4.6 | 2.9 | -1.2 | -3.7 |
| 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 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 8.1 | 7.3 | 9.3 | 10.9 | 11.0 | 13.0 | 13.1 | 12.0 | 11.5 | 9.8 | 8.5 | 7.9 |
| Precipitation (mm) | 14 | 47 | 55 | 6 | 16 | 0 | 0 | 1 | 0 | 4 | 12 | 6 |
| Sunny days | 23 | 13 | 18 | 25 | 20 | 29 | 31 | 30 | 30 | 26 | 21 | 25 |
| Rainy days | 3 | 12 | 13 | 5 | 11 | 1 | 0 | 1 | 0 | 5 | 9 | 6 |
| Snow days | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Bīyūn-e Kohneh during the most sunny months:
The largest precipitation sum in Bīyūn-e Kohneh is at