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September Weather in Gannan, China

Last updated: August 22, 2025

In September, the average temperature in Gannan, China hovers around 15°C (58°F). However, temperatures can fluctuate, with minimums dropping to -1°C (31°F) and maximums soaring to 30°C (86°F). Expect 94 mm (3.7 in) of precipitation over approximately 11 days, accompanied by an average humidity level of 82%.

September Temperature in Gannan

In September in Gannan, the average temperature is 15°C (58°F). Maximum temperatures can reach 30°C (86°F), while minimums can drop as low as -1°C (31°F). Be prepared for a wide range of temperatures, making it essential to pack both warm and light clothing for your trip.

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

The chart illustrates September temperature patterns in Gannan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Gannan, September typically has an average temperature of 15°C (58°F), with highs reaching up to 30°C (86°F) and lows dropping to around -1°C (31°F).
JanFebMarAprMayJunJulAugSepOctNovDec082844586875685841213
Data source: Temperature data for Gannan 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 Gannan

In Gannan in September, the precipitation amount is 94 mm (3.7 in) over the course of 11 days.

September Precipitation Trends in Gannan

The chart displays monthly precipitation patterns in Gannan, 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 Gannan, September typically receives around 94 mm (3.7 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec2572841110162160942484
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Gannan

In Gannan in September humidity is 82%. With an average temperature of 15°C (58°F), this humidity feels like a warm, damp blanket wrapping around you, making outdoor exploration a bit uncomfortable and causing you to sweat lightly even during mild activities.

September Average Humidity in Gannan

This chart illustrates the average monthly humidity levels in Gannan, 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 Gannan is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%60%60%57%58%76%84%85%82%77%61%62%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Gannan

In Gannan in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Gannan, you can refer to this Hourly UV Index in Gannan.

Maximum UV Index Levels in Gannan for September

The chart shows the monthly maximum UV Index (UVI) for Gannan 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 Gannan typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec234688986421
Data source: Gannan 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 Gannan Compares to Other Months

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

This table compares monthly weather conditions in Gannan, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-18°C (0°F)2 mm (0.1 inches)70%low
February Weather-13°C (8°F)5 mm (0.2 inches)60%moderate
March Weather-2°C (28°F)7 mm (0.3 inches)60%moderate
April Weather7°C (45°F)28 mm (1.1 inches)57%high
May Weather15°C (59°F)41 mm (1.6 inches)58%very high
June Weather20°C (68°F)110 mm (4.3 inches)76%very high
July Weather24°C (75°F)162 mm (6.4 inches)84%very high
August Weather20°C (68°F)160 mm (6.3 inches)85%very high
September Weather15°C (58°F)94 mm (3.7 inches)82%high
October Weather5°C (41°F)24 mm (0.9 inches)77%moderate
November Weather-6°C (21°F)8 mm (0.3 inches)61%low
December Weather-16°C (3°F)4 mm (0.2 inches)62%low

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