April Weather in Onon, Mongolia

Last updated: August 28, 2025

In April, the average temperature in Onon, Mongolia hovers around 4°C (39°F). Expect a chilly range with minima dropping to -13°C (10°F) and peaks reaching up to 28°C (82°F). Rainfall is modest, with 16 mm (0.6 in) expected over just 3 days. The atmosphere will feel quite damp, with an average humidity of 67%.

April Temperature in Onon

In April in Onon, the average temperature is 4°C (39°F). Maximums can reach 28°C (82°F) and minimums can dip to as low as -13°C (10°F). Be prepared for a wide range of temperatures, making it essential to pack layers for your travels.

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

The chart illustrates April 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, April typically has an average temperature of 4°C (39°F), with highs reaching up to 28°C (82°F) and lows dropping to around -13°C (10°F).

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

April Precipitation in Onon

In Onon in April, the precipitation amount is 16 mm (0.6 in), spread over a duration of 3 days.

April Precipitation Trends in Onon

The chart displays monthly precipitation patterns in Onon, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In Onon, April typically receives around 16 mm (0.6 inches) of precipitation spread over approximately 3 days.

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

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Millimeters (mm) Inches (in)

April Humidity in Onon

In Onon in April, humidity is 67%. With an average temperature of 4°C (39°F), this humidity feels like a brisk chill that penetrates your clothing, making outdoor activities more challenging and requiring layered clothing for comfort during your travels.

April Average Humidity in Onon

This chart illustrates the average monthly humidity levels in Onon, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in Onon is approximately 67%, offering insight into how humid the weather typically is during this month.

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

April UV Index in Onon

In Onon in April, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Onon, you can refer to this Hourly UV Index in Onon.

Maximum UV Index Levels in Onon for April

The chart shows the monthly maximum UV Index (UVI) for Onon in April, 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 April, the maximum UV index in Onon typically reaches 6, which falls under the high exposure category.

Data source: Onon April 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 April 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 April’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 April’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