September Weather in Yanchiwan, China

Last updated: August 23, 2025

In September, the average temperature in Yanchiwan, China hovers around 5°C (41°F). During this time, expect minimum temperatures to dip as low as -8°C (18°F), while the mercury can rise to a pleasant 19°C (66°F). With an average precipitation of 14 mm (0.6 in) spread across 4 days, you might want to keep an umbrella handy. Don’t forget, the average humidity sits at a comfortable 59%, adding a touch of moisture to the air!

September Temperature in Yanchiwan

In September in Yanchiwan, the average temperature is 5°C (41°F). The maximum can reach 19°C (66°F) and the minimum can be as low as -8°C (18°F). Be prepared for a wide range of temperatures and pack accordingly for your travels.

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

The chart illustrates September temperature patterns in Yanchiwan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yanchiwan, September typically has an average temperature of 5°C (41°F), with highs reaching up to 19°C (66°F) and lows dropping to around -8°C (18°F).

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

September Precipitation in Yanchiwan

In Yanchiwan in September, the total precipitation amount is 14 mm (0.6 in) spread over a duration of 4 days.

September Precipitation Trends in Yanchiwan

The chart displays monthly precipitation patterns in Yanchiwan, 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 Yanchiwan, September typically receives around 14 mm (0.6 inches) of precipitation spread over approximately 4 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 Yanchiwan

In Yanchiwan in September, humidity is 59%. With an average temperature of 5°C (41°F), this humidity feels like a cold mist enveloping you, making outdoor activities invigorating yet challenging for traveling, as the dampness can seep into your clothing and chill you to the bone.

September Average Humidity in Yanchiwan

This chart illustrates the average monthly humidity levels in Yanchiwan, 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 Yanchiwan is approximately 59%, 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 Yanchiwan

In Yanchiwan 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 Yanchiwan.

Maximum UV Index Levels in Yanchiwan for September

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

Data source: Yanchiwan 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 Yanchiwan Compares to Other Months

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

This table compares monthly weather conditions in Yanchiwan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-19°C (-1°F)	6 mm (0.2 inches)	75%	moderate
February Weather	-16°C (4°F)	7 mm (0.3 inches)	73%	high
March Weather	-8°C (17°F)	8 mm (0.3 inches)	68%	very high
April Weather	-3°C (28°F)	21 mm (0.8 inches)	66%	extreme
May Weather	2°C (37°F)	33 mm (1.3 inches)	59%	extreme
June Weather	6°C (43°F)	71 mm (2.8 inches)	57%	extreme
July Weather	9°C (49°F)	70 mm (2.7 inches)	54%	extreme
August Weather	9°C (49°F)	37 mm (1.4 inches)	58%	extreme
September Weather	5°C (41°F)	14 mm (0.6 inches)	59%	extreme
October Weather	-2°C (28°F)	6 mm (0.2 inches)	67%	very high
November Weather	-10°C (14°F)	5 mm (0.2 inches)	71%	moderate
December Weather	-17°C (1°F)	6 mm (0.2 inches)	74%	moderate