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September Weather in Tonghaikou, China

Last updated: August 22, 2025

In September, the average temperature in Tonghaikou, China hovers around 25°C (78°F). Weather can vary significantly, with minimums dipping to 16°C (62°F) and soaring to maximums of 38°C (100°F). Expect 99 mm (3.9 in) of precipitation over approximately 11 days, and enjoy a relatively high average humidity of 68%.

September Temperature in Tonghaikou

In September in Tonghaikou, the average temperature is 25°C (78°F). The maximum can reach 38°C (100°F), and the minimum can be as low as 16°C (62°F). Overall, this makes Tonghaikou a pleasant destination for travelers seeking warm and comfortable weather.

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

The chart illustrates September temperature patterns in Tonghaikou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Tonghaikou, September typically has an average temperature of 25°C (78°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (62°F).
JanFebMarAprMayJunJulAugSepOctNovDec414555647279848577655645
Data source: Temperature data for Tonghaikou 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 Tonghaikou

In Tonghaikou, in September, the precipitation amount is 99 mm (3.9 in) over the course of 11 days.

September Precipitation Trends in Tonghaikou

The chart displays monthly precipitation patterns in Tonghaikou, 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 Tonghaikou, September typically receives around 99 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec526112114920723623213999614529
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Tonghaikou

In Tonghaikou in September, humidity is 68%. With an average temperature of 25°C (78°F), this humidity feels like a warm blanket enveloping you, making outdoor activities feel a bit more intense and sticky, but still manageable for traveling if you stay hydrated and take breaks in the shade.

September Average Humidity in Tonghaikou

This chart illustrates the average monthly humidity levels in Tonghaikou, 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 Tonghaikou is approximately 68%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec71%75%84%85%83%83%87%83%68%72%83%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Tonghaikou

In Tonghaikou 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 Tonghaikou.

Maximum UV Index Levels in Tonghaikou for September

The chart shows the monthly maximum UV Index (UVI) for Tonghaikou 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 Tonghaikou typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec568101111121210864
Data source: Tonghaikou 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 Tonghaikou Compares to Other Months

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

This table compares monthly weather conditions in Tonghaikou, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (41°F)52 mm (2.1 inches)71%moderate
February Weather7°C (45°F)61 mm (2.4 inches)75%high
March Weather13°C (56°F)121 mm (4.8 inches)84%very high
April Weather18°C (64°F)149 mm (5.9 inches)85%very high
May Weather22°C (73°F)207 mm (8.1 inches)82%extreme
June Weather26°C (79°F)236 mm (9.3 inches)83%extreme
July Weather29°C (84°F)232 mm (9.1 inches)87%extreme
August Weather29°C (85°F)139 mm (5.5 inches)83%extreme
September Weather25°C (78°F)99 mm (3.9 inches)68%very high
October Weather18°C (65°F)61 mm (2.4 inches)72%very high
November Weather14°C (57°F)45 mm (1.8 inches)83%high
December Weather7°C (45°F)29 mm (1.1 inches)79%moderate

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