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September Weather in Caoyan, China

Last updated: August 23, 2025

In September, the average temperature in Caoyan, China is a comfortable 24°C (75°F). However, be prepared for temperature fluctuations, with minimums dropping to 13°C (56°F) and maximums soaring up to 35°C (96°F). Expect some rain, as precipitation usually totals around 103 mm (4.0 in) over 10 days, contributing to an average humidity of 79%. Be ready for a mix of warmth and moisture on your visit!

September Temperature in Caoyan

In September in Caoyan, the average temperature is 24°C (75°F), with maximums reaching 35°C (96°F) and minimums dipping as low as 13°C (56°F). This makes it a great time to visit for those who enjoy warm weather, while also being prepared for cooler evenings.

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

The chart illustrates September temperature patterns in Caoyan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caoyan, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (96°F) and lows dropping to around 13°C (56°F).
JanFebMarAprMayJunJulAugSepOctNovDec384151597076828275645442
Data source: Temperature data for Caoyan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Caoyan

In Caoyan in September, the precipitation amount is 103 mm (4.0 in) over a span of 10 days.

September Precipitation Trends in Caoyan

The chart displays monthly precipitation patterns in Caoyan, 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 Caoyan, September typically receives around 103 mm (4.0 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec41354953126127248152103573836
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Caoyan

In Caoyan in September, humidity is 79%. With an average temperature of 24°C (75°F), this humidity feels like a warm, tropical embrace, making traveling quite sticky and requiring ample hydration and light clothing to keep comfortable while exploring.

September Average Humidity in Caoyan

This chart illustrates the average monthly humidity levels in Caoyan, 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 Caoyan is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec67%69%79%86%87%90%95%92%79%76%77%73%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Caoyan

In Caoyan 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 Caoyan.

Maximum UV Index Levels in Caoyan for September

The chart shows the monthly maximum UV Index (UVI) for Caoyan 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 Caoyan typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec46891010111110754
Data source: Caoyan 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 Caoyan Compares to Other Months

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

This table compares monthly weather conditions in Caoyan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (39°F)41 mm (1.6 inches)67%moderate
February Weather5°C (41°F)35 mm (1.4 inches)69%high
March Weather10°C (51°F)49 mm (1.9 inches)79%very high
April Weather15°C (59°F)53 mm (2.1 inches)86%very high
May Weather21°C (70°F)126 mm (4.9 inches)87%very high
June Weather25°C (77°F)127 mm (5.0 inches)90%very high
July Weather28°C (82°F)248 mm (9.8 inches)95%extreme
August Weather28°C (83°F)152 mm (6.0 inches)92%extreme
September Weather24°C (75°F)103 mm (4.0 inches)79%very high
October Weather18°C (64°F)57 mm (2.2 inches)76%high
November Weather12°C (54°F)38 mm (1.5 inches)77%moderate
December Weather5°C (42°F)36 mm (1.4 inches)73%moderate

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