Last updated: August 28, 2025
In December, the average temperature in Sergelen, Mongolia hovers around -17°C (2°F), with extremes ranging from a brisk -32°C (-26°F) to a milder 3°C (38°F). You can expect 3 mm (0.1 in) of precipitation, though it typically falls over just 0 days. The air is quite moist, with an average humidity of 80%, creating a crisp and chilly atmosphere.
In December in Sergelen, the average temperature is -17°C (2°F), with maximums reaching up to 3°C (38°F) and minimums plummeting as low as -32°C (-26°F). Travelers should be well-prepared for extremely cold conditions and dress warmly to enjoy their visit.
In Sergelen in December, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.
In Sergelen in December, humidity is 80%. With an average temperature of -17°C (2°F), this humidity feels like a biting chill that penetrates your layers, making even short walks outside a daunting task.
In Sergelen 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 Sergelen, you can visit Hourly UV Index in Sergelen.
UV Risk Categories
Weather in Sergelen varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Sergelen, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -19°C (-2°F) | 2 mm (0.1 inches) | 85% | low |
| February Weather | -15°C (5°F) | 2 mm (0.1 inches) | 75% | moderate |
| March Weather | -3°C (27°F) | 3 mm (0.1 inches) | 55% | moderate |
| April Weather | 6°C (43°F) | 8 mm (0.3 inches) | 54% | high |
| May Weather | 13°C (56°F) | 16 mm (0.6 inches) | 52% | very high |
| June Weather | 20°C (68°F) | 24 mm (0.9 inches) | 51% | very high |
| July Weather | 22°C (72°F) | 64 mm (2.5 inches) | 64% | very high |
| August Weather | 18°C (65°F) | 61 mm (2.4 inches) | 67% | very high |
| September Weather | 13°C (57°F) | 17 mm (0.7 inches) | 68% | high |
| October Weather | 3°C (38°F) | 7 mm (0.3 inches) | 65% | moderate |
| November Weather | -8°C (18°F) | 7 mm (0.3 inches) | 63% | low |
| December Weather | -17°C (2°F) | 3 mm (0.1 inches) | 80% | low |