Average annual temperature is 0.2 °C
Absolute maximum temperature: 31.0 °C
Absolute minimum temperature: -32.8 °C
Number of sunny days: 204 days
Number of rainy days: 114 days
Number of snow days: 47 days
Look at detailed online map of Bayan-Ulaan
* Weather data for Bayan-Ulaan Mongolia is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 1.7 | 8.1 | 12.2 | 18.9 | 20.2 | 28.9 | 31.0 | 26.9 | 26.1 | 15.9 | 9.9 | 2.4 |
| Average daytime temperature (°C) | -9.3 | -3.6 | 3.5 | 5.5 | 12.7 | 21.3 | 21.1 | 21.2 | 15.5 | 10.9 | -4.5 | -10.0 |
| Average temperature (°C) | -17.5 | -12.1 | -4.0 | -0.5 | 5.9 | 14.4 | 15.7 | 15.0 | 8.5 | 3.3 | -11.2 | -16.4 |
| Average night temperature (°C) | -23.8 | -20.7 | -11.9 | -6.6 | -0.6 | 7.4 | 10.0 | 8.2 | 1.8 | -3.3 | -17.0 | -22.2 |
| Absolute minimum temperature (°C) | -32.8 | -26.6 | -21.4 | -16.4 | -4.7 | 0.6 | 3.7 | 2.8 | -5.5 | -5.3 | -24.5 | -31.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.3 | 11.9 | 13.6 | 15.0 | 15.8 | 15.4 | 14.1 | 12.6 | 10.9 | 9.4 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 7.4 | 8.6 | 10.3 | 11.2 | 10.2 | 11.3 | 10.7 | 11.2 | 10.0 | 9.2 | 7.4 | 6.6 |
| Precipitation (mm) | 2 | 4 | 9 | 4 | 44 | 44 | 164 | 61 | 32 | 1 | 21 | 6 |
| Sunny days | 25 | 24 | 23 | 19 | 8 | 8 | 7 | 9 | 10 | 27 | 20 | 24 |
| Rainy days | 1 | 0 | 0 | 1 | 20 | 22 | 24 | 22 | 17 | 4 | 1 | 2 |
| Snow days | 5 | 4 | 8 | 10 | 3 | 0 | 0 | 0 | 3 | 0 | 9 | 5 |
Months with the longest average daylight duration in Bayan-Ulaan:
The largest precipitation sum in Bayan-Ulaan is at