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September Weather in Jiumen, China

Last updated: August 22, 2025

In September, the average temperature in Jiumen, China is a pleasant 23°C (73°F). However, temperatures can vary significantly, with a minimum of 11°C (52°F) and a maximum reaching up to 37°C (98°F). Expect some rain, as 55 mm (2.2 in) of precipitation typically falls over 6 days. The average humidity hovers around 58%, making for a comfortable climate overall.

September Temperature in Jiumen

In September, in Jiumen, the average temperature is 23°C (73°F). Maximum temperatures can reach 37°C (98°F), while the minimum can drop as low as 11°C (52°F). This makes Jiumen an ideal destination for travelers seeking mild weather with the option for warm days and cooler nights.

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

The chart illustrates September temperature patterns in Jiumen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Jiumen, September typically has an average temperature of 23°C (73°F), with highs reaching up to 37°C (98°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec293550627381838073584531
Data source: Temperature data for Jiumen 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 Jiumen

In Jiumen in September, the total precipitation amount is 55 mm (2.2 in) spread over 6 days.

September Precipitation Trends in Jiumen

The chart displays monthly precipitation patterns in Jiumen, 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 Jiumen, September typically receives around 55 mm (2.2 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec34144137451301295551132
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Jiumen

In Jiumen in September, humidity is 58%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, creating a gentle stickiness that makes you appreciate the shade while exploring the vibrant streets.

September Average Humidity in Jiumen

This chart illustrates the average monthly humidity levels in Jiumen, 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 Jiumen is approximately 58%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec44%50%58%69%58%64%72%70%58%68%69%60%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Jiumen

In Jiumen in September, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Jiumen.

Maximum UV Index Levels in Jiumen for September

The chart shows the monthly maximum UV Index (UVI) for Jiumen 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 Jiumen typically reaches 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec24689101098642
Data source: Jiumen 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 Jiumen Compares to Other Months

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

This table compares monthly weather conditions in Jiumen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (29°F)3 mm (0.1 inches)44%low
February Weather2°C (35°F)4 mm (0.2 inches)50%moderate
March Weather10°C (50°F)14 mm (0.5 inches)58%high
April Weather16°C (62°F)41 mm (1.6 inches)69%very high
May Weather23°C (73°F)37 mm (1.5 inches)58%very high
June Weather27°C (82°F)45 mm (1.8 inches)64%very high
July Weather28°C (83°F)130 mm (5.1 inches)72%very high
August Weather27°C (81°F)129 mm (5.1 inches)70%very high
September Weather23°C (73°F)55 mm (2.2 inches)58%very high
October Weather15°C (59°F)51 mm (2.0 inches)68%high
November Weather7°C (46°F)13 mm (0.5 inches)69%moderate
December Weather0°C (32°F)2 mm (0.1 inches)60%low

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