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September Weather in Yancheng, China

Last updated: August 22, 2025

In September, the average temperature in Yancheng, China is a pleasant 24°C (75°F), with lows dipping to a cool 14°C (57°F) and highs reaching up to a warm 35°C (96°F). You can expect 95 mm (3.7 in) of rainfall over approximately 9 days, contributing to an average humidity of 79%. Perfect for those who enjoy a vibrant climate!

September Temperature in Yancheng

In September in Yancheng, the average temperature is 24°C (75°F). Maximum temperatures can reach 35°C (96°F), while minimums can drop to as low as 14°C (57°F). This makes Yancheng an ideal destination for travelers looking to enjoy warm weather while still having the option for cooler evenings.

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

The chart illustrates September temperature patterns in Yancheng, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yancheng, 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 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec384150596976828275635441
Data source: Temperature data for Yancheng 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 Yancheng

In Yancheng in September, the precipitation amount is 95 mm (3.7 in) over the course of 9 days.

September Precipitation Trends in Yancheng

The chart displays monthly precipitation patterns in Yancheng, 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 Yancheng, September typically receives around 95 mm (3.7 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec4134485011412325115695543832
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Yancheng

In Yancheng 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 Yancheng

This chart illustrates the average monthly humidity levels in Yancheng, 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 Yancheng 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 Yancheng

In Yancheng 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 Yancheng.

Maximum UV Index Levels in Yancheng for September

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

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

This table compares monthly weather conditions in Yancheng, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather3°C (38°F)41 mm (1.6 inches)67%moderate
February Weather5°C (41°F)34 mm (1.3 inches)69%high
March Weather10°C (51°F)48 mm (1.9 inches)79%very high
April Weather15°C (59°F)49 mm (1.9 inches)86%very high
May Weather21°C (70°F)114 mm (4.5 inches)87%very high
June Weather25°C (76°F)123 mm (4.8 inches)90%very high
July Weather28°C (82°F)251 mm (9.9 inches)95%extreme
August Weather28°C (82°F)156 mm (6.1 inches)92%extreme
September Weather24°C (75°F)95 mm (3.7 inches)79%very high
October Weather17°C (64°F)54 mm (2.1 inches)76%high
November Weather12°C (54°F)38 mm (1.5 inches)77%moderate
December Weather5°C (42°F)32 mm (1.3 inches)73%moderate

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