January Weather in Bayan, Mongolia

Last updated: August 28, 2025

In January, the average temperature in Bayan, Mongolia plummets to a chilly -17°C (1°F), with extremes reaching as low as -36°C (-32°F) and occasionally peaking at 0°C (32°F). Expect only about 3 mm (0.1 in) of precipitation over the course of a day, coupled with a high average humidity of 89%, making for a brisk and somewhat damp winter experience.

January Temperature in Bayan

In January in Bayan, the average temperature is -17°C (1°F), with maximums reaching 0°C (32°F) and minimums dropping as low as -36°C (-32°F). Travelers should prepare for extremely cold conditions and dress appropriately to ensure a safe and enjoyable visit.

January Weather in Bayan: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Bayan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bayan, January typically has an average temperature of -17°C (1°F), with highs reaching up to 0°C (32°F) and lows dropping to around -36°C (-32°F).

Data source: Temperature data for Bayan generated using information from the Copernicus Climate Change Service.

January Precipitation in Bayan

In Bayan in January, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

January Precipitation Trends in Bayan

The chart displays monthly precipitation patterns in Bayan, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Bayan, January typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

January Humidity in Bayan

In Bayan in January humidity is 89%. With an average temperature of -17°C (1°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra effort just to keep warm.

January Average Humidity in Bayan

This chart illustrates the average monthly humidity levels in Bayan, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Bayan is approximately 89%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Bayan

In Bayan in January, 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.

Maximum UV Index Levels in Bayan for January

The chart shows the monthly maximum UV Index (UVI) for Bayan in January, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In January, the maximum UV index in Bayan typically reaches 2, which falls under the low exposure category.

Data source: Bayan January UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How January Weather in Bayan Compares to Other Months

Weather in Bayan varies notably across the year, with each month offering distinct climate conditions. This page compares January’s weather to other months in Bayan, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Bayan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-17°C (1°F)	3 mm (0.1 inches)	89%	low
February Weather	-13°C (8°F)	5 mm (0.2 inches)	78%	moderate
March Weather	-3°C (28°F)	7 mm (0.3 inches)	66%	moderate
April Weather	6°C (42°F)	18 mm (0.7 inches)	64%	high
May Weather	13°C (55°F)	20 mm (0.8 inches)	52%	very high
June Weather	18°C (66°F)	49 mm (1.9 inches)	59%	very high
July Weather	20°C (69°F)	66 mm (2.6 inches)	63%	very high
August Weather	17°C (64°F)	74 mm (2.9 inches)	62%	very high
September Weather	12°C (54°F)	36 mm (1.4 inches)	65%	high
October Weather	2°C (36°F)	16 mm (0.6 inches)	65%	moderate
November Weather	-7°C (20°F)	10 mm (0.4 inches)	69%	low
December Weather	-15°C (5°F)	4 mm (0.2 inches)	86%	low