Last updated: August 28, 2025
In December, the average temperature in Hajuu-Us, Mongolia is a brisk -15°C (4°F). Expect occasional extremes with a minimum dipping to -31°C (-24°F) and a maximum reaching up to 3°C (38°F). Despite the cold, precipitation is minimal, averaging only 2 mm (0.1 in) over the course of 0 days. With an average humidity of 79%, the air feels crisp and invigorating.
In December in Hajuu-Us, the average temperature is -15°C (4°F), with maximums reaching up to 3°C (38°F) and minimums plunging as low as -31°C (-24°F). Travelers should prepare for extreme cold conditions and dress warmly while exploring the winter landscapes.
In Hajuu-Us in December, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.
In Hajuu-Us in December humidity is 79%. With an average temperature of -15°C (4°F), this humidity feels like an icy blanket wrapping around you, making travel uncomfortable and challenging as the cold air mixes with the dampness, penetrating your clothing and chilling you to the bone.
In Hajuu-Us in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Hajuu-Us, you can visit Hourly UV Index in Hajuu-Us.
UV Risk Categories
Weather in Hajuu-Us varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Hajuu-Us, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -17°C (2°F) | 1 mm (0.0 inches) | 80% | low |
| February Weather | -13°C (8°F) | 3 mm (0.1 inches) | 67% | moderate |
| March Weather | -3°C (27°F) | 4 mm (0.1 inches) | 45% | moderate |
| April Weather | 5°C (42°F) | 9 mm (0.4 inches) | 46% | very high |
| May Weather | 12°C (55°F) | 11 mm (0.4 inches) | 36% | very high |
| June Weather | 19°C (66°F) | 16 mm (0.6 inches) | 41% | very high |
| July Weather | 21°C (70°F) | 51 mm (2.0 inches) | 40% | very high |
| August Weather | 18°C (64°F) | 61 mm (2.4 inches) | 45% | very high |
| September Weather | 13°C (55°F) | 18 mm (0.7 inches) | 47% | high |
| October Weather | 2°C (36°F) | 9 mm (0.3 inches) | 51% | moderate |
| November Weather | -7°C (19°F) | 4 mm (0.2 inches) | 56% | moderate |
| December Weather | -15°C (4°F) | 2 mm (0.1 inches) | 79% | low |