December Weather in Onsu, China

Last updated: August 22, 2025

In December, the average temperature in Onsu, China hovers around -5°C (23°F). While the mercury can drop as low as -19°C (-1°F), it may also rise to a maximum of 6°C (42°F). Precipitation is minimal, with only 2 mm (0.1 in) recorded over 0 days, and the average humidity stands at a comfortable 51%.

December Temperature in Onsu

In December in Onsu, the average temperature is -5°C (23°F). The maximum can reach 6°C (42°F), while the minimum can drop as low as -19°C (-1°F). Be prepared for very cold weather with significant temperature variations if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Onsu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Onsu, December typically has an average temperature of -5°C (23°F), with highs reaching up to 6°C (42°F) and lows dropping to around -19°C (-1°F).

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

December Precipitation in Onsu

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

December Precipitation Trends in Onsu

The chart displays monthly precipitation patterns in Onsu, 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 Onsu, December typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Onsu

In Onsu in December humidity is 51%. With average temperature -5°C (23°F), this humidity feels like a brisk chill that bites at your skin, making it essential to bundle up for your travels.

December Average Humidity in Onsu

This chart illustrates the average monthly humidity levels in Onsu, 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 Onsu is approximately 51%, 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 Onsu

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

Maximum UV Index Levels in Onsu for December

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

Data source: Onsu 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 Onsu Compares to Other Months

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

This table compares monthly weather conditions in Onsu, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-7°C (20°F)	2 mm (0.1 inches)	49%	low
February Weather	-2°C (29°F)	6 mm (0.3 inches)	42%	moderate
March Weather	6°C (44°F)	4 mm (0.2 inches)	45%	high
April Weather	13°C (56°F)	25 mm (1.0 inches)	39%	very high
May Weather	19°C (66°F)	16 mm (0.6 inches)	36%	very high
June Weather	21°C (70°F)	17 mm (0.7 inches)	36%	very high
July Weather	23°C (74°F)	13 mm (0.5 inches)	36%	very high
August Weather	21°C (71°F)	29 mm (1.1 inches)	37%	very high
September Weather	17°C (63°F)	20 mm (0.8 inches)	39%	very high
October Weather	10°C (50°F)	13 mm (0.5 inches)	47%	moderate
November Weather	1°C (35°F)	7 mm (0.3 inches)	49%	moderate
December Weather	-5°C (23°F)	2 mm (0.1 inches)	51%	low