May Weather in Siwei, China

Last updated: August 22, 2025

In Siwei, China, the average temperature in May hovers around 21°C (70°F), with a minimum of 6°C (44°F) and a potential peak of 39°C (102°F). Expect around 45 mm (1.8 in) of precipitation spread over 5 days during this month, while the average humidity sits comfortably at 58%.

May Temperature in Siwei

In May in Siwei, the average temperature is 21°C (70°F). Maximum temperatures can reach 39°C (102°F), while minimums can dip as low as 6°C (44°F). This range makes Siwei an ideal destination for travelers looking to enjoy a mix of warm days and cooler nights.

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

The chart illustrates May 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, May typically has an average temperature of 21°C (70°F), with highs reaching up to 39°C (102°F) and lows dropping to around 6°C (44°F).

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

May Precipitation in Siwei

In Siwei in May, the total precipitation amount is 45 mm (1.8 in) over a span of 5 days.

May Precipitation Trends in Siwei

The chart displays monthly precipitation patterns in Siwei, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Siwei, May typically receives around 45 mm (1.8 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Siwei

In Siwei in May, humidity is 58%. With an average temperature of 21°C (70°F), this humidity feels like a warm embrace, creating a tropical atmosphere that's perfect for leisurely strolls but may require frequent breaks to stay hydrated during your travels.

May Average Humidity in Siwei

This chart illustrates the average monthly humidity levels in Siwei, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Siwei is approximately 58%, offering insight into how humid the weather typically is during this month.

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

May UV Index in Siwei

In Siwei in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Siwei.

Maximum UV Index Levels in Siwei for May

The chart shows the monthly maximum UV Index (UVI) for Siwei in May, 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 May, the maximum UV index in Siwei typically reaches 9, which falls under the very high exposure category.

Data source: Siwei May 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 May 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 May’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 May’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