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September Weather in Hongsihu, China

Last updated: August 23, 2025

In Hongsihu, China, the average temperature in September is a mild 15°C (59°F). You'll experience a comfortable range, with minimums dipping to 2°C (36°F) and maximums reaching up to 28°C (83°F). Be prepared for some moisture, as 50 mm (2.0 in) of precipitation is expected over 7 days, coupled with an average humidity level of 49%.

September Temperature in Hongsihu

In September in Hongsihu, the average temperature is 15°C (59°F). Maximums can reach 28°C (83°F), and minimums can be as low as 2°C (36°F). This range makes it a great time for travelers to enjoy a mix of pleasant days and cooler evenings, so packing layers is advisable.

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

The chart illustrates September temperature patterns in Hongsihu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hongsihu, September typically has an average temperature of 15°C (59°F), with highs reaching up to 28°C (83°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec172439495967726859443118
Data source: Temperature data for Hongsihu 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 Hongsihu

In Hongsihu in September, the precipitation amount is 50 mm (2.0 in) over a span of 7 days.

September Precipitation Trends in Hongsihu

The chart displays monthly precipitation patterns in Hongsihu, 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 Hongsihu, September typically receives around 50 mm (2.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec3242524383555501033
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hongsihu

In Hongsihu in September, humidity is 49%. With an average temperature of 15°C (59°F), this humidity feels like a refreshing breeze, making it an ideal time for traveling and exploring the sights without overwhelming heat.

September Average Humidity in Hongsihu

This chart illustrates the average monthly humidity levels in Hongsihu, 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 Hongsihu is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec60%57%60%55%39%41%39%44%49%59%62%61%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hongsihu

In Hongsihu in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Hongsihu.

Maximum UV Index Levels in Hongsihu for September

The chart shows the monthly maximum UV Index (UVI) for Hongsihu 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 Hongsihu typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec35710111312119743
Data source: Hongsihu 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 Hongsihu Compares to Other Months

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

This table compares monthly weather conditions in Hongsihu, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-8°C (17°F)3 mm (0.1 inches)60%moderate
February Weather-4°C (24°F)2 mm (0.1 inches)57%moderate
March Weather4°C (39°F)4 mm (0.1 inches)60%high
April Weather10°C (49°F)25 mm (1.0 inches)55%very high
May Weather15°C (59°F)24 mm (1.0 inches)39%extreme
June Weather19°C (67°F)38 mm (1.5 inches)41%extreme
July Weather22°C (72°F)34 mm (1.4 inches)39%extreme
August Weather20°C (68°F)55 mm (2.1 inches)44%extreme
September Weather15°C (59°F)50 mm (2.0 inches)49%very high
October Weather7°C (44°F)10 mm (0.4 inches)59%high
November Weather-1°C (31°F)3 mm (0.1 inches)62%moderate
December Weather-8°C (18°F)3 mm (0.1 inches)61%moderate

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