Average temperature in December is -19.5 °C
Average daytime temperature is -13.9 °C
Average night temperature is -25.5 °C
Absolute maximum temperature: -0.1 °C
Absolute minimum temperature: -37.4 °C
Number of sunny days: 20
Number of rainy days:
Number of snow days: 11
Precipitation sum: 8 mm
* Weather data for Ulan Bator Mongolia is based on climate observations for 2023 year
| December (°C) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum temperature | -8.4 | -3.8 | -6.4 | -3.3 | -7.7 | -7.3 | -0.1 | -16.2 | -16.2 | -14.4 | -15.9 | -16.8 | -18.6 | -23.1 | -25.6 | -26.3 | -19.4 | -23.1 | -25.6 | -25.5 | -21 | -23.1 | -18.3 | -10.5 | -8.3 | -9.4 | -11.2 | -3.5 | -5.6 | -8.8 | -7.5 |
| Apparent max temperature | -12.4 | -7.5 | -10.5 | -8.3 | -13.7 | -11.6 | -4.2 | -20.8 | -20.5 | -18.7 | -20.8 | -21 | -23.9 | -28.9 | -30.3 | -31.2 | -23.8 | -29.7 | -30.8 | -30.1 | -25.5 | -27.7 | -22.9 | -14.6 | -13.8 | -13.5 | -15.2 | -8.4 | -9.6 | -12.8 | -11.4 |
| Mean temperature | -13.3 | -9.9 | -11.1 | -7.8 | -14.8 | -12.6 | -8.9 | -23.3 | -23.8 | -18.5 | -22.5 | -21.6 | -21.5 | -25.9 | -31.2 | -30.4 | -24.5 | -28.3 | -31.5 | -29.6 | -26.3 | -26.9 | -21 | -17.1 | -17.1 | -17.6 | -16.5 | -11.5 | -11 | -14.5 | -14.7 |
| Apparent mean temperature | -19.8 | -22.2 | -21.9 | -22.5 | -25.8 | -25.2 | -27.5 | -33.6 | -34.6 | -29.3 | -32.9 | -34.2 | -29.4 | -35.7 | -38.9 | -39.6 | -38.7 | -42.3 | -42 | -39.5 | -38.3 | -33.8 | -32.3 | -27.3 | -30.1 | -29.1 | -25.7 | -21.9 | -18.6 | -25.6 | -28.3 |
| Minimum temperature | -15.8 | -17.5 | -17.1 | -17.3 | -20.7 | -20.3 | -21.8 | -28.1 | -29.1 | -24.2 | -27.5 | -28.9 | -24.1 | -30.9 | -34.3 | -34.6 | -33.1 | -37.3 | -37.4 | -34.7 | -33 | -29.2 | -27.6 | -21.9 | -25.1 | -23.8 | -20.7 | -16.9 | -14 | -20.2 | -23.1 |
| Apparent min temperature | -17.5 | -14.3 | -15.6 | -13 | -20.4 | -17.2 | -14.1 | -28.5 | -29 | -23.3 | -27.6 | -26.3 | -26.8 | -31.2 | -35.8 | -35.4 | -29.8 | -34 | -36.4 | -34.2 | -31.3 | -31.5 | -25.6 | -21.6 | -22.1 | -22.5 | -21.1 | -16.1 | -15.7 | -19.5 | -19.4 |
| December | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight duration (h) | 8.7 | 8.7 | 8.6 | 8.6 | 8.6 | 8.6 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.5 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 | 8.4 |
| Sunshine duration (h) | 7.4 | 7.4 | 7.4 | 7.4 | 6.7 | 7.3 | 6.9 | 7.3 | 7.3 | 6.3 | 6.3 | 6.8 | 1.9 | 2.7 | 7.1 | 7.1 | 6.7 | 6.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 7.1 | 6.3 | 7.1 | 6.9 | 0 | 2.6 | 5.5 |
| Precipitation (mm) | 0 | 0 | 0 | 1.8 | 0.3 | 0.1 | 0.3 | 0 | 0 | 1 | 0.1 | 0.1 | 2.3 | 0.1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1.9 | 0 | 0.3 |
| Precipitation hours | 0 | 0 | 0 | 5 | 2 | 1 | 2 | 0 | 0 | 10 | 1 | 1 | 17 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 2 |
| Wind speed (m/s) | 6.6 | 10.6 | 9.5 | 29 | 24.6 | 9.7 | 25.7 | 9.8 | 11.7 | 8.9 | 11 | 7.9 | 12.8 | 13.8 | 6.1 | 7.4 | 17.5 | 22 | 8.6 | 6.5 | 11.6 | 6 | 5.9 | 10 | 15.1 | 10.9 | 12.2 | 12.4 | 13.2 | 17.3 | 12.4 |
In December 2023, the highest daytime temperature in Ulan Bator was -0.1°C.
While the minimum temperature at night dropped to -37.4°C.
The average nighttime and daytime temperatures during December in Ulan Bator are -25.5°C and -13.9°C respectively.
The precipitation sum in December is about 8 mm.