September Weather in Yiliu, China

Last updated: August 22, 2025

In September, the average temperature in Yiliu, China is a warm 27°C (81°F), making it a pleasant time to enjoy the outdoors. Expect a range with minimum temperatures dipping to 15°C (59°F) and highs reaching 36°C (98°F). While you'll bask in the warmth, be prepared for some moisture, as 140 mm (5.5 in) of precipitation typically falls over 16 days. The average humidity hovers around 62%, adding a touch of tropical feel to your stay.

September Temperature in Yiliu

In September in Yiliu, the average temperature is 27°C (81°F). Maximums can reach 36°C (98°F), and minimums can be as low as 15°C (59°F). This weather makes Yiliu an ideal destination for travelers looking for warm climates and plenty of outdoor activities.

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

The chart illustrates September temperature patterns in Yiliu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yiliu, September typically has an average temperature of 27°C (81°F), with highs reaching up to 36°C (98°F) and lows dropping to around 15°C (59°F).

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

September Precipitation in Yiliu

In Yiliu in September, the total precipitation amount is 140 mm (5.5 in) spread over 16 days.

September Precipitation Trends in Yiliu

The chart displays monthly precipitation patterns in Yiliu, 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 Yiliu, September typically receives around 140 mm (5.5 inches) of precipitation spread over approximately 16 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Yiliu

In Yiliu in September humidity is 62%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, soft blanket, making travel feel both cozy and slightly sluggish as you navigate through the warmth.

September Average Humidity in Yiliu

This chart illustrates the average monthly humidity levels in Yiliu, 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 Yiliu is approximately 62%, 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 Yiliu

In Yiliu 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 Yiliu.

Maximum UV Index Levels in Yiliu for September

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

Data source: Yiliu 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 Yiliu Compares to Other Months

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

This table compares monthly weather conditions in Yiliu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (53°F)	55 mm (2.2 inches)	63%	high
February Weather	12°C (55°F)	110 mm (4.3 inches)	66%	very high
March Weather	17°C (63°F)	182 mm (7.2 inches)	77%	extreme
April Weather	20°C (68°F)	184 mm (7.2 inches)	73%	extreme
May Weather	24°C (76°F)	238 mm (9.4 inches)	85%	extreme
June Weather	27°C (81°F)	344 mm (13.6 inches)	83%	extreme
July Weather	29°C (84°F)	139 mm (5.5 inches)	89%	extreme
August Weather	28°C (83°F)	187 mm (7.3 inches)	88%	extreme
September Weather	27°C (81°F)	140 mm (5.5 inches)	62%	extreme
October Weather	22°C (71°F)	76 mm (3.0 inches)	56%	very high
November Weather	17°C (63°F)	64 mm (2.5 inches)	63%	very high
December Weather	12°C (54°F)	37 mm (1.5 inches)	70%	high