Last updated: August 28, 2025
In Bayan, Mongolia, the average temperature in December hovers around -16°C (4°F). During this time, you can expect a minimum drop to -32°C (-25°F) and a maximum peak of 2°C (36°F). Precipitation is minimal, with just 3 mm (0.1 in) spread across 0 days. Additionally, the average humidity is high at 96%, creating a crisp winter atmosphere.
In December in Bayan, the average temperature is -16°C (4°F), with maximums reaching 2°C (36°F) and minimums plunging as low as -32°C (-25°F). It’s important to bundle up and prepare for extreme cold if you're planning to travel during this month.
In Bayan in December, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.
In Bayan in December, humidity is 96%. With an average temperature of -16°C (4°F), this humidity feels like an eerie chill that seeps into your bones, making it uncomfortable for traveling. The moisture in the air amplifies the cold, creating an atmosphere that can be both breathtaking and biting, requiring extra layers and a heightened awareness of the weather conditions.
In Bayan 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 Bayan, you can visit Hourly UV Index in Bayan.
UV Risk Categories
Weather in Bayan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Bayan, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -17°C (2°F) | 2 mm (0.1 inches) | 98% | low |
February Weather | -12°C (10°F) | 6 mm (0.2 inches) | 94% | moderate |
March Weather | -3°C (27°F) | 6 mm (0.2 inches) | 88% | moderate |
April Weather | 6°C (42°F) | 10 mm (0.4 inches) | 74% | high |
May Weather | 12°C (54°F) | 13 mm (0.5 inches) | 50% | very high |
June Weather | 18°C (64°F) | 18 mm (0.7 inches) | 48% | very high |
July Weather | 19°C (67°F) | 35 mm (1.4 inches) | 49% | very high |
August Weather | 17°C (62°F) | 58 mm (2.3 inches) | 54% | very high |
September Weather | 11°C (52°F) | 18 mm (0.7 inches) | 59% | high |
October Weather | 2°C (35°F) | 12 mm (0.5 inches) | 67% | moderate |
November Weather | -7°C (20°F) | 5 mm (0.2 inches) | 86% | moderate |
December Weather | -16°C (4°F) | 3 mm (0.1 inches) | 96% | low |