Last updated: August 28, 2025
In December, the average temperature in Ulaandel, Mongolia hovers around -18°C (1°F), with extremes ranging from a frosty -34°C (-29°F) to a milder 3°C (37°F). Expect a modest precipitation total of 5 mm (0.2 in) over just 1 day, while average humidity maintains a chilly 81%.
In December in Ulaandel, the average temperature is -18°C (1°F). Maximum temperatures can reach 3°C (37°F), while minimums can drop as low as -34°C (-29°F). Travelers should be prepared for extremely cold weather and dress in layers to ensure comfort during their stay.
In Ulaandel in December, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.
In Ulaandel in December, humidity is 81%. With an average temperature of -18°C (1°F), this humidity feels like a biting chill that penetrates every layer of clothing, making outdoor travel uncomfortable and challenging, as the cold air clings to your skin and breath forms icy clouds against your face.
In Ulaandel 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 Ulaandel, you can visit Hourly UV Index in Ulaandel.
UV Risk Categories
Weather in Ulaandel varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Ulaandel, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | -19°C (-2°F) | 3 mm (0.1 inches) | 91% | low |
| February Weather | -16°C (4°F) | 3 mm (0.1 inches) | 82% | moderate |
| March Weather | -4°C (25°F) | 5 mm (0.2 inches) | 54% | moderate |
| April Weather | 5°C (41°F) | 16 mm (0.6 inches) | 53% | high |
| May Weather | 12°C (54°F) | 27 mm (1.1 inches) | 56% | very high |
| June Weather | 18°C (65°F) | 39 mm (1.5 inches) | 54% | very high |
| July Weather | 21°C (70°F) | 81 mm (3.2 inches) | 65% | very high |
| August Weather | 17°C (64°F) | 88 mm (3.5 inches) | 71% | very high |
| September Weather | 13°C (55°F) | 29 mm (1.1 inches) | 71% | high |
| October Weather | 3°C (37°F) | 15 mm (0.6 inches) | 68% | moderate |
| November Weather | -8°C (17°F) | 10 mm (0.4 inches) | 65% | low |
| December Weather | -18°C (1°F) | 5 mm (0.2 inches) | 81% | low |