May Weather in Herlen, Mongolia

Last updated: August 28, 2025

In May, the average temperature in Herlen, Mongolia hovers around 12°C (54°F). However, brace yourself for extremes: temperatures can dip as low as -6°C (21°F) or soar to a sweltering 35°C (95°F). With an average humidity of 52% and about 19 mm (0.7 in) of precipitation spread over 4 days, visitors should be prepared for a mix of refreshing and drizzly weather.

May Temperature in Herlen

In May in Herlen, the average temperature is 12°C (54°F). Maximums can reach 35°C (95°F), and minimums can drop as low as -6°C (21°F). This wide range of temperatures means travelers should be prepared for both warm days and chilly nights.

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

The chart illustrates May 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, May typically has an average temperature of 12°C (54°F), with highs reaching up to 35°C (95°F) and lows dropping to around -6°C (21°F).

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

May Precipitation in Herlen

In Herlen in May, the precipitation amount is 19 mm (0.7 in) over the course of 4 days.

May Precipitation Trends in Herlen

The chart displays monthly precipitation patterns in Herlen, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Herlen, May typically receives around 19 mm (0.7 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Herlen

In Herlen in May, humidity is 52%. With an average temperature of 12°C (54°F), this humidity feels like a brisk, refreshing chill that invigorates your senses while traveling, making it a perfect time for exploring the outdoors without the oppressive heat.

May Average Humidity in Herlen

This chart illustrates the average monthly humidity levels in Herlen, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Herlen is approximately 52%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Herlen

In Herlen in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Herlen.

Maximum UV Index Levels in Herlen for May

The chart shows the monthly maximum UV Index (UVI) for Herlen in May, 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 May, the maximum UV index in Herlen typically reaches 9, which falls under the very high exposure category.

Data source: Herlen May 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 May 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 May’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 May’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