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September Weather in Yancheng, China

Last updated: August 22, 2025

In September, the average temperature in Yancheng, China hovers around 23°C (73°F). Expect a comfortable range, with minimums dipping to 15°C (59°F) and maximums soaring up to 34°C (94°F). However, be prepared for 123 mm (4.9 in) of precipitation spread over 19 days, resulting in an average humidity level of 91%. Stay dry and enjoy the vibrant atmosphere!

September Temperature in Yancheng

In September in Yancheng, the average temperature is 23°C (73°F). Maximums can reach 34°C (94°F), while minimums can drop as low as 15°C (59°F). This pleasant weather makes it an ideal time for outdoor adventures and exploring the local attractions.

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 23°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec465059667277808173645647
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 total precipitation amount is 123 mm (4.9 in), occurring over the course of 19 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 123 mm (4.9 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec2024438897109332329123692929
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 91%. With an average temperature of 23°C (73°F), this humidity feels like a heavy blanket wrapping around you, making travel feel sticky and exhausting, as the heat clings to your skin and draining your energy with every step.

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 91%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%87%78%80%87%89%89%91%91%90%91%87%
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 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 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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec568111211111011864
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 Weather8°C (46°F)20 mm (0.8 inches)86%moderate
February Weather10°C (50°F)24 mm (0.9 inches)87%high
March Weather15°C (60°F)42 mm (1.7 inches)78%very high
April Weather19°C (66°F)88 mm (3.5 inches)80%extreme
May Weather22°C (73°F)97 mm (3.8 inches)87%extreme
June Weather25°C (77°F)109 mm (4.3 inches)89%extreme
July Weather27°C (80°F)331 mm (13.1 inches)89%extreme
August Weather27°C (81°F)329 mm (12.9 inches)91%very high
September Weather23°C (73°F)123 mm (4.9 inches)91%extreme
October Weather18°C (64°F)69 mm (2.7 inches)90%very high
November Weather13°C (56°F)29 mm (1.2 inches)91%high
December Weather9°C (48°F)29 mm (1.2 inches)87%moderate

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