September Weather in Yili, China

Last updated: August 23, 2025

In September, the average temperature in Yili, China hovers around 13°C (55°F), bringing a blend of cool and mild days. Expect minimums dipping as low as -2°C (30°F) and maximums reaching up to 29°C (85°F). With 98 mm (3.9 in) of precipitation spread over 12 days, pack your umbrella! Additionally, the average humidity sits at a high 85%, contributing to a refreshing atmosphere.

September Temperature in Yili

In September in Yili, the average temperature is 13°C (55°F), with maximums reaching up to 29°C (85°F) and minimums dropping as low as -2°C (30°F). Travelers should be prepared for a wide range of temperatures during this month, making layers essential for comfort.

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

The chart illustrates September temperature patterns in Yili, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yili, September typically has an average temperature of 13°C (55°F), with highs reaching up to 29°C (85°F) and lows dropping to around -2°C (30°F).

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

September Precipitation in Yili

In Yili in September, the precipitation amount is 98 mm (3.9 in) over the course of 12 days.

September Precipitation Trends in Yili

The chart displays monthly precipitation patterns in Yili, 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 Yili, September typically receives around 98 mm (3.9 inches) of precipitation spread over approximately 12 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 Yili

In Yili in September, humidity is 85%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making even short walks feel exhausting and urging travelers to seek shade and refreshment frequently.

September Average Humidity in Yili

This chart illustrates the average monthly humidity levels in Yili, 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 Yili is approximately 85%, 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 Yili

In Yili in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Yili, you can refer to this Hourly UV Index in Yili.

Maximum UV Index Levels in Yili for September

The chart shows the monthly maximum UV Index (UVI) for Yili 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 Yili typically reaches 6, which falls under the high exposure category.

Data source: Yili 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 Yili Compares to Other Months

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

This table compares monthly weather conditions in Yili, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-20°C (-5°F)	3 mm (0.1 inches)	87%	low
February Weather	-16°C (3°F)	5 mm (0.2 inches)	84%	low
March Weather	-5°C (24°F)	14 mm (0.5 inches)	76%	moderate
April Weather	5°C (41°F)	24 mm (0.9 inches)	67%	moderate
May Weather	13°C (55°F)	49 mm (1.9 inches)	70%	high
June Weather	18°C (64°F)	127 mm (5.0 inches)	79%	very high
July Weather	22°C (72°F)	149 mm (5.9 inches)	86%	very high
August Weather	18°C (65°F)	201 mm (7.9 inches)	87%	very high
September Weather	13°C (55°F)	98 mm (3.9 inches)	85%	high
October Weather	3°C (38°F)	33 mm (1.3 inches)	81%	moderate
November Weather	-8°C (17°F)	13 mm (0.5 inches)	73%	low
December Weather	-19°C (-3°F)	4 mm (0.2 inches)	84%	low