September Weather in Chengmen, China

Last updated: August 22, 2025

In September, the average temperature in Chengmen, China is a pleasant 25°C (78°F), with extremes ranging from a minimum of 17°C (62°F) to a maximum of 36°C (97°F). Expect around 120 mm (4.7 in) of precipitation over about 11 days, and be prepared for an average humidity of 73%, making it a perfect time to enjoy the local scenery while staying hydrated!

September Temperature in Chengmen

In September, in Chengmen, the average temperature is 25°C (78°F). Maximums can reach 36°C (97°F), and minimums can be as low as 17°C (62°F). This pleasant climate makes Chengmen an ideal destination for travelers looking to enjoy warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Chengmen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Chengmen, September typically has an average temperature of 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 17°C (62°F).

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

September Precipitation in Chengmen

In Chengmen in September, the precipitation amount is 120 mm (4.7 in) during a span of 11 days.

September Precipitation Trends in Chengmen

The chart displays monthly precipitation patterns in Chengmen, 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 Chengmen, September typically receives around 120 mm (4.7 inches) of precipitation spread over approximately 11 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 Chengmen

In Chengmen in September, humidity is 73%. With an average temperature of 25°C (78°F), this humidity feels like stepping into a warm, heavy blanket that wraps around you, making travel feel sluggish and requiring regular breaks to stay refreshed.

September Average Humidity in Chengmen

This chart illustrates the average monthly humidity levels in Chengmen, 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 Chengmen is approximately 73%, 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 Chengmen

In Chengmen in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Chengmen.

Maximum UV Index Levels in Chengmen for September

The chart shows the monthly maximum UV Index (UVI) for Chengmen 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 Chengmen typically reaches 10, which falls under the very high exposure category.

Data source: Chengmen 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 Chengmen Compares to Other Months

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

This table compares monthly weather conditions in Chengmen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	6°C (42°F)	64 mm (2.5 inches)	69%	high
February Weather	7°C (46°F)	90 mm (3.5 inches)	73%	high
March Weather	13°C (56°F)	158 mm (6.2 inches)	82%	very high
April Weather	18°C (65°F)	147 mm (5.8 inches)	86%	very high
May Weather	23°C (74°F)	181 mm (7.1 inches)	86%	extreme
June Weather	26°C (79°F)	264 mm (10.4 inches)	86%	extreme
July Weather	29°C (85°F)	273 mm (10.7 inches)	90%	extreme
August Weather	29°C (85°F)	143 mm (5.6 inches)	86%	extreme
September Weather	25°C (78°F)	120 mm (4.7 inches)	73%	very high
October Weather	19°C (66°F)	36 mm (1.4 inches)	73%	very high
November Weather	14°C (57°F)	46 mm (1.8 inches)	80%	high
December Weather	8°C (46°F)	42 mm (1.7 inches)	79%	moderate