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September Weather in Dongtan, China

Last updated: August 22, 2025

In Dongtan, China, the average temperature in September hovers around 6°C (42°F), with a minimum dipping to -6°C (21°F) and a pleasant maximum reaching 18°C (65°F). Expect about 125 mm (4.9 in) of precipitation spread over 19 days, contributing to an average humidity level of 82%. Stay prepared for a mix of cool and damp conditions during your visit!

September Temperature in Dongtan

In September in Dongtan, the average temperature is 6°C (42°F). The maximum can reach 18°C (65°F), while the minimum can drop as low as -6°C (21°F). Be prepared for a range of weather conditions if you're planning to travel during this time.

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

The chart illustrates September temperature patterns in Dongtan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dongtan, September typically has an average temperature of 6°C (42°F), with highs reaching up to 18°C (65°F) and lows dropping to around -6°C (21°F).
JanFebMarAprMayJunJulAugSepOctNovDec272029374651494227141
Data source: Temperature data for Dongtan 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 Dongtan

In Dongtan in September, the precipitation amount is 125 mm (4.9 in), occurring over a span of 19 days.

September Precipitation Trends in Dongtan

The chart displays monthly precipitation patterns in Dongtan, 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 Dongtan, September typically receives around 125 mm (4.9 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec81022557211211915912551148
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Dongtan

In Dongtan in September, humidity is 82%. With an average temperature of 6°C (42°F), this humidity feels like a damp chill that seeps into your bones, making outdoor activities uncomfortable and prompting travelers to seek cozy indoor spaces instead.

September Average Humidity in Dongtan

This chart illustrates the average monthly humidity levels in Dongtan, 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 Dongtan is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%80%81%78%71%77%77%82%82%85%80%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dongtan

In Dongtan 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 Dongtan.

Maximum UV Index Levels in Dongtan for September

The chart shows the monthly maximum UV Index (UVI) for Dongtan 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 Dongtan typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec3710131418161311964
Data source: Dongtan 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 Dongtan Compares to Other Months

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

This table compares monthly weather conditions in Dongtan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-17°C (2°F)8 mm (0.3 inches)74%moderate
February Weather-14°C (7°F)10 mm (0.4 inches)80%high
March Weather-7°C (20°F)22 mm (0.9 inches)81%very high
April Weather-2°C (29°F)55 mm (2.1 inches)78%extreme
May Weather3°C (38°F)72 mm (2.8 inches)71%extreme
June Weather8°C (46°F)112 mm (4.4 inches)77%extreme
July Weather10°C (51°F)119 mm (4.7 inches)77%extreme
August Weather9°C (49°F)159 mm (6.3 inches)82%extreme
September Weather6°C (42°F)125 mm (4.9 inches)82%extreme
October Weather-3°C (27°F)51 mm (2.0 inches)85%very high
November Weather-10°C (14°F)13 mm (0.5 inches)79%high
December Weather-17°C (2°F)8 mm (0.3 inches)71%moderate

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