January Weather in Bayan-Ulaan, Mongolia

Last updated: August 28, 2025

In January, the average temperature in Bayan-Ulaan, Mongolia hovers around -18°C (0°F). Expect extremes, with minimums plummeting to a chilling -37°C (-34°F) and maximums reaching a frosty 1°C (34°F). Precipitation is light, with just 3 mm (0.1 in) recorded over 0 days, while average humidity remains high at 89%. Stay warm!

January Temperature in Bayan-Ulaan

In January in Bayan-Ulaan, the average temperature is -18°C (0°F). The maximum can reach 1°C (34°F) and the minimum can be as low as -37°C (-34°F). Travelers should be prepared for extremely cold conditions and dress accordingly to ensure comfort during their visit.

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

The chart illustrates January temperature patterns in Bayan-Ulaan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bayan-Ulaan, January typically has an average temperature of -18°C (0°F), with highs reaching up to 1°C (34°F) and lows dropping to around -37°C (-34°F).

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

January Precipitation in Bayan-Ulaan

In Bayan-Ulaan in January, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

January Precipitation Trends in Bayan-Ulaan

The chart displays monthly precipitation patterns in Bayan-Ulaan, 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-Ulaan, January typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 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-Ulaan

In Bayan-Ulaan in January, humidity is 89%. With an average temperature of -18°C (0°F), this humidity feels like a biting chill that seeps into your bones, making traveling feel even more arduous as you navigate through the frigid air.

January Average Humidity in Bayan-Ulaan

This chart illustrates the average monthly humidity levels in Bayan-Ulaan, 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-Ulaan 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-Ulaan

In Bayan-Ulaan 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-Ulaan, you can visit Hourly UV Index in Bayan-Ulaan.

Maximum UV Index Levels in Bayan-Ulaan for January

The chart shows the monthly maximum UV Index (UVI) for Bayan-Ulaan 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-Ulaan typically reaches 2, which falls under the low exposure category.

Data source: Bayan-Ulaan 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-Ulaan Compares to Other Months

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

This table compares monthly weather conditions in Bayan-Ulaan, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-18°C (0°F)	3 mm (0.1 inches)	89%	low
February Weather	-15°C (6°F)	8 mm (0.3 inches)	81%	moderate
March Weather	-6°C (22°F)	13 mm (0.5 inches)	72%	high
April Weather	2°C (35°F)	19 mm (0.8 inches)	69%	very high
May Weather	8°C (47°F)	25 mm (1.0 inches)	54%	very high
June Weather	14°C (57°F)	40 mm (1.6 inches)	60%	very high
July Weather	16°C (61°F)	86 mm (3.4 inches)	64%	very high
August Weather	13°C (56°F)	91 mm (3.6 inches)	65%	very high
September Weather	8°C (47°F)	32 mm (1.2 inches)	68%	high
October Weather	-1°C (31°F)	12 mm (0.5 inches)	68%	moderate
November Weather	-9°C (17°F)	6 mm (0.3 inches)	75%	moderate
December Weather	-16°C (4°F)	4 mm (0.2 inches)	89%	low