May Weather in Onon, Mongolia

Last updated: August 28, 2025

The average temperature in Onon, Mongolia during May is 10°C (51°F). Temperatures can vary significantly, with a minimum of -6°C (21°F) and a maximum of 34°C (93°F). During this month, expect about 35 mm (1.4 in) of precipitation spread across 7 days, and enjoy an average humidity level of 69%.

May Temperature in Onon

In May in Onon, the average temperature is 10°C (51°F). Maximum temperatures can reach 34°C (93°F), while minimums can drop as low as -6°C (21°F). Be prepared for a wide range of temperatures when traveling to Onon during this month.

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

The chart illustrates May temperature patterns in Onon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onon, May typically has an average temperature of 10°C (51°F), with highs reaching up to 34°C (93°F) and lows dropping to around -6°C (21°F).

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

May Precipitation in Onon

In Onon in May, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.

May Precipitation Trends in Onon

The chart displays monthly precipitation patterns in Onon, 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 Onon, May typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 7 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 Onon

In Onon in May humidity is 69%. With an average temperature of 10°C (51°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, so it's advisable to dress in layers and plan for indoor attractions to fully enjoy your time.

May Average Humidity in Onon

This chart illustrates the average monthly humidity levels in Onon, 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 Onon is approximately 69%, 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 Onon

In Onon in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Onon.

Maximum UV Index Levels in Onon for May

The chart shows the monthly maximum UV Index (UVI) for Onon 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 Onon typically reaches 8, which falls under the very high exposure category.

Data source: Onon 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 Onon Compares to Other Months

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

This table compares monthly weather conditions in Onon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-22°C (-7°F)	2 mm (0.1 inches)	92%	low
February Weather	-18°C (0°F)	5 mm (0.2 inches)	86%	moderate
March Weather	-6°C (22°F)	6 mm (0.2 inches)	72%	moderate
April Weather	4°C (39°F)	16 mm (0.6 inches)	67%	high
May Weather	10°C (51°F)	35 mm (1.4 inches)	69%	very high
June Weather	17°C (63°F)	71 mm (2.8 inches)	67%	very high
July Weather	19°C (66°F)	118 mm (4.6 inches)	79%	very high
August Weather	16°C (61°F)	95 mm (3.7 inches)	79%	very high
September Weather	10°C (51°F)	42 mm (1.6 inches)	82%	high
October Weather	0°C (33°F)	20 mm (0.8 inches)	79%	moderate
November Weather	-10°C (14°F)	7 mm (0.3 inches)	81%	moderate
December Weather	-19°C (-2°F)	4 mm (0.1 inches)	90%	low