Average annual temperature is 1.5 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -36.6 °C
Number of sunny days: 239 days
Number of rainy days: 94 days
Number of snow days: 32 days
Look at detailed online map of Bayan-Önjüül Sum
* Weather data for Bayan-Önjüül Sum 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) | -1.9 | 7.3 | 14.9 | 21.0 | 22.6 | 34.3 | 34.1 | 29.5 | 30.9 | 16.0 | 13.0 | 4.2 |
| Average daytime temperature (°C) | -12.4 | -4.3 | 3.9 | 6.5 | 15.9 | 24.9 | 23.8 | 23.3 | 17.6 | 11.2 | -7.2 | -12.8 |
| Average temperature (°C) | -19.2 | -11.4 | -2.7 | 0.7 | 9.0 | 18.1 | 18.1 | 17.5 | 11.5 | 4.4 | -11.6 | -17.4 |
| Average night temperature (°C) | -25.7 | -17.1 | -9.5 | -5.4 | 2.3 | 11.0 | 12.8 | 11.7 | 5.7 | -1.5 | -16.4 | -22.6 |
| Absolute minimum temperature (°C) | -36.6 | -22.1 | -18.9 | -14.7 | -2.5 | 3.8 | 8.0 | 5.8 | -1.7 | -5.0 | -27.2 | -32.5 |
| 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) | 9.0 | 10.3 | 11.9 | 13.6 | 15.0 | 15.8 | 15.4 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| 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) | 7.1 | 8.8 | 10.3 | 11.0 | 10.2 | 11.4 | 10.3 | 11.2 | 9.8 | 9.2 | 7.1 | 6.3 |
| Precipitation (mm) | 1 | 0 | 3 | 13 | 25 | 18 | 123 | 61 | 34 | 3 | 20 | 11 |
| Sunny days | 29 | 28 | 27 | 22 | 13 | 16 | 9 | 13 | 13 | 27 | 19 | 23 |
| Rainy days | 1 | 0 | 2 | 2 | 15 | 14 | 22 | 18 | 17 | 2 | 1 | 0 |
| Snow days | 1 | 0 | 2 | 6 | 3 | 0 | 0 | 0 | 0 | 2 | 10 | 8 |
Months with the longest average daylight duration in Bayan-Önjüül Sum:
The largest precipitation sum in Bayan-Önjüül Sum is at