January Weather in Siwei, China

Last updated: August 22, 2025

In January, the average temperature in Siwei, China hovers around -2°C (28°F), with a minimum of -16°C (3°F) and a potential maximum of 14°C (57°F). Expect some light precipitation, averaging 3 mm (0.1 in) over about 1 day, all while enjoying a comfortable average humidity of 44%.

January Temperature in Siwei

In January in Siwei, the average temperature hovers around -2°C (28°F), with a maximum that can reach 14°C (57°F) and a minimum dipping as low as -16°C (3°F). Travelers should be prepared for a wide range of temperatures and dress in layers to ensure comfort during their visit.

January Weather in Siwei: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Siwei, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siwei, January typically has an average temperature of -2°C (28°F), with highs reaching up to 14°C (57°F) and lows dropping to around -16°C (3°F).

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

January Precipitation in Siwei

In Siwei in January, the precipitation amount is 3 mm (0.1 in) over the course of 1 day.

January Precipitation Trends in Siwei

The chart displays monthly precipitation patterns in Siwei, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Siwei, January typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 1 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Siwei

In Siwei in January humidity is 44%. With average temperature -2°C (28°F), this humidity feels like a brisk, frosty chill in the air, making travel invigorating yet slightly uncomfortable; you'll want to bundle up and be prepared for a biting wind that accentuates the cold.

January Average Humidity in Siwei

This chart illustrates the average monthly humidity levels in Siwei, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Siwei is approximately 44%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Siwei

In Siwei in January, 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 Siwei, you can visit Hourly UV Index in Siwei.

Maximum UV Index Levels in Siwei for January

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

Data source: Siwei January 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 January Weather in Siwei Compares to Other Months

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

This table compares monthly weather conditions in Siwei, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-2°C (28°F)	3 mm (0.1 inches)	44%	low
February Weather	1°C (34°F)	7 mm (0.3 inches)	50%	moderate
March Weather	9°C (48°F)	16 mm (0.6 inches)	58%	high
April Weather	15°C (59°F)	47 mm (1.8 inches)	69%	very high
May Weather	21°C (70°F)	45 mm (1.8 inches)	58%	very high
June Weather	26°C (78°F)	54 mm (2.1 inches)	64%	very high
July Weather	26°C (80°F)	176 mm (6.9 inches)	72%	very high
August Weather	25°C (78°F)	155 mm (6.1 inches)	70%	very high
September Weather	21°C (70°F)	63 mm (2.5 inches)	58%	very high
October Weather	13°C (56°F)	60 mm (2.4 inches)	68%	high
November Weather	6°C (44°F)	15 mm (0.6 inches)	69%	moderate
December Weather	-1°C (31°F)	4 mm (0.1 inches)	60%	low