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September Weather in Hehai, China

Last updated: August 22, 2025

The average temperature in Hehai, China during September is a pleasant 25°C (77°F). However, temperatures can vary, with minimums dropping to 15°C (59°F) and maximums soaring to 35°C (95°F). This month also brings 106 mm (4.2 in) of precipitation spread across 11 days, resulting in an average humidity of 75%—perfect for enjoying the lushness of the season!

September Temperature in Hehai

In September in Hehai, the average temperature is 25°C (77°F). The maximum can reach 35°C (95°F), while the minimum can be as low as 15°C (59°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy the outdoor attractions in Hehai.

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

The chart illustrates September temperature patterns in Hehai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hehai, September typically has an average temperature of 25°C (77°F), with highs reaching up to 35°C (95°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec414354627278848477665644
Data source: Temperature data for Hehai 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 Hehai

In Hehai in September, the precipitation amount is 106 mm (4.2 in) spread over a duration of 11 days.

September Precipitation Trends in Hehai

The chart displays monthly precipitation patterns in Hehai, 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 Hehai, September typically receives around 106 mm (4.2 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec55566970124173277146106503839
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hehai

In Hehai in September humidity is 75%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket, enveloping you and making travel somewhat taxing, as every step can feel heavier and the air thicker, often leading to a desire for shade and cool breezes.

September Average Humidity in Hehai

This chart illustrates the average monthly humidity levels in Hehai, 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 Hehai is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%73%82%86%85%85%90%88%75%76%84%77%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hehai

In Hehai 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 Hehai.

Maximum UV Index Levels in Hehai for September

The chart shows the monthly maximum UV Index (UVI) for Hehai 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 Hehai typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec568101011111110764
Data source: Hehai 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 Hehai Compares to Other Months

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

This table compares monthly weather conditions in Hehai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)55 mm (2.2 inches)70%moderate
February Weather6°C (44°F)56 mm (2.2 inches)73%high
March Weather12°C (54°F)69 mm (2.7 inches)82%very high
April Weather17°C (62°F)70 mm (2.7 inches)86%very high
May Weather22°C (72°F)124 mm (4.9 inches)85%very high
June Weather25°C (78°F)173 mm (6.8 inches)85%extreme
July Weather29°C (84°F)277 mm (10.9 inches)90%extreme
August Weather29°C (85°F)146 mm (5.8 inches)88%extreme
September Weather25°C (77°F)106 mm (4.2 inches)75%very high
October Weather19°C (66°F)50 mm (1.9 inches)76%high
November Weather13°C (56°F)38 mm (1.5 inches)84%high
December Weather7°C (44°F)39 mm (1.5 inches)77%moderate

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