December Weather in Sanlei, China

Last updated: August 22, 2025

In Sanlei, China, the average temperature in December hovers around -7°C (20°F), with the potential to dip as low as -23°C (-9°F) or peak at a mild 12°C (54°F). During this month, expect minimal precipitation, averaging just 1 mm (0.0 in) over the course of 0 days. The air feels relatively humid, with an average humidity level of 60%, adding to the chill in the atmosphere.

December Temperature in Sanlei

In December in Sanlei, the average temperature is -7°C (20°F). Maximums can reach 12°C (54°F) and minimums can be as low as -23°C (-9°F). Be sure to bundle up if you're planning to travel during this time!

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

The chart illustrates December temperature patterns in Sanlei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sanlei, December typically has an average temperature of -7°C (20°F), with highs reaching up to 12°C (54°F) and lows dropping to around -23°C (-9°F).

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

December Precipitation in Sanlei

In Sanlei in December, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

December Precipitation Trends in Sanlei

The chart displays monthly precipitation patterns in Sanlei, 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 Sanlei, December typically receives around 1 mm (0.0 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 Sanlei

In Sanlei in December humidity is 60%. With an average temperature of -7°C (20°F), this humidity feels like a biting chill that seeps into your bones, making outdoor adventures less inviting and requiring extra layers to stay warm and comfortable while traveling.

December Average Humidity in Sanlei

This chart illustrates the average monthly humidity levels in Sanlei, 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 Sanlei is approximately 60%, 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 Sanlei

In Sanlei in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Sanlei, you can check the information here.

Maximum UV Index Levels in Sanlei for December

The chart shows the monthly maximum UV Index (UVI) for Sanlei 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 Sanlei typically reaches 3, which falls under the moderate exposure category.

Data source: Sanlei 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 Sanlei Compares to Other Months

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

This table compares monthly weather conditions in Sanlei, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (19°F)	2 mm (0.1 inches)	53%	moderate
February Weather	-3°C (27°F)	1 mm (0.0 inches)	48%	moderate
March Weather	6°C (44°F)	1 mm (0.0 inches)	52%	high
April Weather	13°C (55°F)	12 mm (0.5 inches)	57%	very high
May Weather	19°C (66°F)	10 mm (0.4 inches)	41%	extreme
June Weather	24°C (75°F)	18 mm (0.7 inches)	41%	extreme
July Weather	26°C (79°F)	15 mm (0.6 inches)	38%	extreme
August Weather	23°C (74°F)	37 mm (1.4 inches)	42%	extreme
September Weather	18°C (65°F)	28 mm (1.1 inches)	52%	very high
October Weather	9°C (49°F)	13 mm (0.5 inches)	58%	high
November Weather	1°C (34°F)	2 mm (0.1 inches)	59%	moderate
December Weather	-7°C (20°F)	1 mm (0.0 inches)	60%	moderate