January Weather in Herlen, Mongolia

Last updated: August 28, 2025

In Herlen, Mongolia, the average temperature in January hovers around -21°C (-6°F). During this chilly time, temperatures can plunge as low as -40°C (-40°F) or rise to a maximum of -2°C (28°F). Expect minimal precipitation, with an average of just 2 mm (0.1 in) over 0 days, and don’t forget your layers—humidity remains high at 85%!

January Temperature in Herlen

In January in Herlen, the average temperature is -21°C (-6°F), with maximums reaching -2°C (28°F) and minimums plunging as low as -40°C (-40°F). Travelers should be prepared for extreme cold conditions during this time.

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

The chart illustrates January temperature patterns in Herlen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herlen, January typically has an average temperature of -21°C (-6°F), with highs reaching up to -2°C (28°F) and lows dropping to around -40°C (-40°F).

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

January Precipitation in Herlen

In Herlen in January, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

January Precipitation Trends in Herlen

The chart displays monthly precipitation patterns in Herlen, 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 Herlen, January typically receives around 2 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 Herlen

In Herlen in January humidity is 85%. With an average temperature of -21°C (-6°F), this humidity feels like a biting chill that wraps around you, making every step outdoors a challenge and requiring extra layers to endure the cold, damp air during your travels.

January Average Humidity in Herlen

This chart illustrates the average monthly humidity levels in Herlen, 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 Herlen is approximately 85%, 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 Herlen

In Herlen 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 Herlen, you can visit Hourly UV Index in Herlen.

Maximum UV Index Levels in Herlen for January

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

Data source: Herlen 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 Herlen Compares to Other Months

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

This table compares monthly weather conditions in Herlen, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-21°C (-6°F)	2 mm (0.1 inches)	85%	low
February Weather	-17°C (2°F)	3 mm (0.1 inches)	75%	moderate
March Weather	-4°C (25°F)	4 mm (0.1 inches)	55%	moderate
April Weather	5°C (41°F)	8 mm (0.3 inches)	54%	high
May Weather	12°C (54°F)	19 mm (0.7 inches)	52%	very high
June Weather	19°C (66°F)	32 mm (1.2 inches)	51%	very high
July Weather	21°C (70°F)	66 mm (2.6 inches)	64%	very high
August Weather	17°C (64°F)	75 mm (2.9 inches)	67%	very high
September Weather	12°C (54°F)	28 mm (1.1 inches)	68%	high
October Weather	2°C (35°F)	14 mm (0.5 inches)	65%	moderate
November Weather	-9°C (15°F)	9 mm (0.3 inches)	63%	low
December Weather	-19°C (-2°F)	3 mm (0.1 inches)	80%	low