September Weather in Siqu, China

Last updated: August 22, 2025

In September, the average temperature in Siqu, China hovers around 21°C (70°F), making it a pleasant time to visit. However, temperatures can fluctuate significantly, with a minimum of 13°C (56°F) and a maximum reaching 32°C (91°F). Be prepared for some rain, as the area experiences an average precipitation of 215 mm (8.5 in) over about 18 days, paired with an average humidity of 71%.

September Temperature in Siqu

In September in Siqu, the average temperature is 21°C (70°F), with maximums that can reach 32°C (91°F) and minimums that can dip as low as 13°C (56°F). This delightful range of temperatures makes Siqu an ideal destination for travelers seeking pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Siqu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Siqu, September typically has an average temperature of 21°C (70°F), with highs reaching up to 32°C (91°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Siqu

In Siqu in September, the precipitation amount is 215 mm (8.5 in) over a span of 18 days.

September Precipitation Trends in Siqu

The chart displays monthly precipitation patterns in Siqu, 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 Siqu, September typically receives around 215 mm (8.5 inches) of precipitation spread over approximately 18 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 Siqu

In Siqu in September, humidity is 71%. With an average temperature of 21°C (70°F), this humidity feels like a warm, sticky embrace, making outdoor activities feel slightly heavy and requiring regular breaks to stay refreshed while exploring.

September Average Humidity in Siqu

This chart illustrates the average monthly humidity levels in Siqu, 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 Siqu is approximately 71%, 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 Siqu

In Siqu 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 Siqu.

Maximum UV Index Levels in Siqu for September

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

Data source: Siqu 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 Siqu Compares to Other Months

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

This table compares monthly weather conditions in Siqu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	80 mm (3.1 inches)	67%	high
February Weather	6°C (43°F)	80 mm (3.1 inches)	73%	high
March Weather	11°C (52°F)	142 mm (5.6 inches)	84%	very high
April Weather	15°C (59°F)	138 mm (5.4 inches)	82%	extreme
May Weather	19°C (67°F)	246 mm (9.7 inches)	86%	extreme
June Weather	23°C (73°F)	244 mm (9.6 inches)	86%	extreme
July Weather	25°C (78°F)	216 mm (8.5 inches)	88%	extreme
August Weather	25°C (78°F)	157 mm (6.2 inches)	85%	extreme
September Weather	21°C (70°F)	215 mm (8.5 inches)	71%	extreme
October Weather	15°C (60°F)	135 mm (5.3 inches)	74%	very high
November Weather	11°C (51°F)	98 mm (3.9 inches)	85%	high
December Weather	5°C (42°F)	61 mm (2.4 inches)	75%	moderate