September Weather in China, Mexico

Last updated: August 27, 2025

In September, the average temperature in China, Mexico hovers around 29°C (85°F). Temperatures can vary significantly, dipping to a cool 18°C (65°F) and soaring up to a scorching 42°C (107°F). During this time, you can expect 101 mm (4.0 in) of precipitation spread over 10 days, along with a notable average humidity of 75%. Stay prepared for a warm and humid atmosphere!

September Temperature in China

In September in China, the average temperature is 29°C (85°F). The maximum can reach 42°C (107°F), and the minimum can be as low as 18°C (65°F). Travelers should be prepared for warm days and cooler evenings, making it ideal for exploring both outdoor activities and night adventures.

September Weather in China: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in China, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In China, September typically has an average temperature of 29°C (85°F), with highs reaching up to 42°C (107°F) and lows dropping to around 18°C (65°F).

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

September Precipitation in China

In China in September, the precipitation amount is 101 mm (4.0 in) spread over the course of 10 days.

September Precipitation Trends in China

The chart displays monthly precipitation patterns in China, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In China, September typically receives around 101 mm (4.0 inches) of precipitation spread over approximately 10 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in China

In China in September, humidity is 75%. With an average temperature of 29°C (85°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities feel heavy and exhausting for traveling.

September Average Humidity in China

This chart illustrates the average monthly humidity levels in China, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in China is approximately 75%, offering insight into how humid the weather typically is during this month.

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

September UV Index in China

In China in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in China.

Maximum UV Index Levels in China for September

The chart shows the monthly maximum UV Index (UVI) for China in September, 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 September, the maximum UV index in China typically reaches 11, which falls under the extreme exposure category.

Data source: China September 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 September Weather in China Compares to Other Months

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

This table compares monthly weather conditions in China, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (62°F)	17 mm (0.7 inches)	84%	high
February Weather	19°C (67°F)	12 mm (0.5 inches)	83%	very high
March Weather	23°C (74°F)	27 mm (1.1 inches)	78%	very high
April Weather	26°C (79°F)	53 mm (2.1 inches)	81%	extreme
May Weather	29°C (85°F)	86 mm (3.4 inches)	82%	extreme
June Weather	31°C (87°F)	62 mm (2.5 inches)	74%	extreme
July Weather	31°C (89°F)	73 mm (2.9 inches)	68%	extreme
August Weather	32°C (90°F)	10 mm (0.4 inches)	67%	extreme
September Weather	29°C (85°F)	101 mm (4.0 inches)	75%	extreme
October Weather	25°C (78°F)	42 mm (1.7 inches)	78%	very high
November Weather	21°C (70°F)	26 mm (1.0 inches)	83%	high
December Weather	18°C (65°F)	17 mm (0.7 inches)	86%	high