Average annual temperature is 2.8 °C
Absolute maximum temperature: 38.9 °C
Absolute minimum temperature: -33.5 °C
Number of sunny days: 225 days
Number of rainy days: 101 days
Number of snow days: 39 days
Look at detailed online map of Bayantümen Sum
* Weather data for Bayantümen 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) | -1.7 | 7.3 | 21.1 | 17.0 | 26.9 | 35.7 | 38.9 | 34.5 | 33.6 | 18.2 | 2.0 | -2.3 |
| Average daytime temperature (°C) | -13.8 | -5.1 | 3.8 | 8.5 | 19.0 | 25.5 | 26.3 | 23.6 | 19.8 | 11.6 | -8.0 | -13.0 |
| Average temperature (°C) | -18.7 | -11.1 | -2.2 | 2.3 | 12.4 | 19.4 | 21.0 | 18.4 | 13.8 | 5.7 | -11.7 | -17.0 |
| Average night temperature (°C) | -23.9 | -16.5 | -7.7 | -3.5 | 5.7 | 12.8 | 15.7 | 13.4 | 8.6 | 0.6 | -16.0 | -21.0 |
| Absolute minimum temperature (°C) | -33.5 | -21.2 | -14.2 | -7.6 | -0.8 | 8.0 | 12.0 | 9.9 | 4.0 | -5.9 | -27.3 | -30.3 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 15.0 | 14.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.2 | 11.9 | 13.7 | 15.2 | 16.0 | 15.6 | 14.3 | 12.6 | 10.8 | 9.3 | 8.5 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 7.0 | 8.6 | 9.4 | 11.1 | 10.6 | 12.1 | 11.1 | 10.9 | 9.8 | 8.9 | 6.3 | 5.9 |
| Precipitation (mm) | 1 | 0 | 12 | 5 | 16 | 42 | 68 | 89 | 31 | 13 | 17 | 5 |
| Sunny days | 28 | 27 | 20 | 19 | 18 | 13 | 12 | 12 | 12 | 22 | 17 | 25 |
| Rainy days | 0 | 0 | 1 | 7 | 13 | 17 | 19 | 19 | 18 | 7 | 0 | 0 |
| Snow days | 3 | 1 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 13 | 6 |
The best time to visit Bayantümen Sum during the most sunny months:
Months with the longest average daylight duration in Bayantümen Sum:
The largest precipitation sum in Bayantümen Sum is at