December Weather in Ongi, Mongolia

Last updated: August 28, 2025

In December, the average temperature in Ongi, Mongolia hovers around -17°C (1°F), with lows plunging to a brisk -38°C (-37°F) and occasional highs reaching up to 2°C (36°F). This chill is complemented by an average humidity of 89%, creating a frosty atmosphere. Expect 5 mm (0.2 in) of precipitation over the course of 1 day, making it a month where winter is unmistakably in full effect.

December Temperature in Ongi

In December in Ongi, the average temperature is -17°C (1°F). Maximum temperatures can reach 2°C (36°F), while minimum temperatures can be as low as -38°C (-37°F). Travelers should be prepared for extremely cold conditions and dress accordingly.

December Weather in Ongi: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Ongi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ongi, December typically has an average temperature of -17°C (1°F), with highs reaching up to 2°C (36°F) and lows dropping to around -38°C (-37°F).

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

December Precipitation in Ongi

In Ongi in December, the precipitation amount is 5 mm (0.2 in) over a duration of 1 day.

December Precipitation Trends in Ongi

The chart displays monthly precipitation patterns in Ongi, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Ongi, December typically receives around 5 mm (0.2 inches) of precipitation spread over approximately 1 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Ongi

In Ongi in December humidity is 89%. With an average temperature of -17°C (1°F), this humidity feels like a biting chill that seeps into your bones, making travel uncomfortable and requiring extra effort just to keep warm.

December Average Humidity in Ongi

This chart illustrates the average monthly humidity levels in Ongi, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Ongi is approximately 89%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Ongi

In Ongi in December, 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 Ongi, you can visit Hourly UV Index in Ongi.

Maximum UV Index Levels in Ongi for December

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

Data source: Ongi December 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 December Weather in Ongi Compares to Other Months

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

This table compares monthly weather conditions in Ongi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-19°C (-2°F)	3 mm (0.1 inches)	89%	low
February Weather	-16°C (4°F)	9 mm (0.4 inches)	81%	moderate
March Weather	-7°C (20°F)	16 mm (0.6 inches)	72%	high
April Weather	1°C (33°F)	21 mm (0.8 inches)	69%	very high
May Weather	7°C (45°F)	31 mm (1.2 inches)	54%	very high
June Weather	12°C (54°F)	51 mm (2.0 inches)	60%	very high
July Weather	15°C (59°F)	100 mm (3.9 inches)	64%	very high
August Weather	12°C (54°F)	106 mm (4.2 inches)	65%	very high
September Weather	7°C (45°F)	35 mm (1.4 inches)	68%	high
October Weather	-2°C (29°F)	13 mm (0.5 inches)	68%	moderate
November Weather	-10°C (14°F)	8 mm (0.3 inches)	75%	moderate
December Weather	-17°C (1°F)	5 mm (0.2 inches)	89%	low