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September Weather in Sansha, China

Last updated: August 22, 2025

In September, the average temperature in Sansha, China hovers around 28°C (83°F), with a minimum of 25°C (78°F) and a maximum reaching 30°C (87°F). Be prepared for some rain, as the area experiences an average precipitation of 166 mm (6.5 in) spread over 19 days. With an average humidity of 82%, it's a month that feels quite tropical!

September Temperature in Sansha

In September in Sansha, the average temperature is 28°C (83°F). Maximums can reach 30°C (87°F), while minimums can drop to as low as 25°C (78°F). It's a warm and pleasant time to visit, perfect for outdoor activities and enjoying the local scenery.

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

The chart illustrates September temperature patterns in Sansha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sansha, September typically has an average temperature of 28°C (83°F), with highs reaching up to 30°C (87°F) and lows dropping to around 25°C (78°F).
JanFebMarAprMayJunJulAugSepOctNovDec757578818385848483817976
Data source: Temperature data for Sansha 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 Sansha

In Sansha in September, the total precipitation amount reaches 166 mm (6.5 in) over the course of 19 days.

September Precipitation Trends in Sansha

The chart displays monthly precipitation patterns in Sansha, 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 Sansha, September typically receives around 166 mm (6.5 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec362218327712120918216628418569
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Sansha

In Sansha in September, humidity is 82%. With an average temperature of 28°C (83°F), this humidity feels like stepping into a warm, damp embrace, which can make traveling feel heavy and exhausting, as every movement can be met with a sticky veil of moisture that clings to the skin.

September Average Humidity in Sansha

This chart illustrates the average monthly humidity levels in Sansha, 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 Sansha is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%80%82%85%84%82%86%85%82%84%85%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Sansha

In Sansha in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Sansha, you can check here.

Maximum UV Index Levels in Sansha for September

The chart shows the monthly maximum UV Index (UVI) for Sansha 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 Sansha typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121314141314141412109
Data source: Sansha 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 Sansha Compares to Other Months

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

This table compares monthly weather conditions in Sansha, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (76°F)36 mm (1.4 inches)79%very high
February Weather24°C (76°F)22 mm (0.9 inches)80%extreme
March Weather26°C (78°F)18 mm (0.7 inches)82%extreme
April Weather27°C (81°F)32 mm (1.2 inches)85%extreme
May Weather29°C (84°F)77 mm (3.0 inches)84%extreme
June Weather29°C (85°F)121 mm (4.8 inches)82%extreme
July Weather29°C (84°F)209 mm (8.2 inches)86%extreme
August Weather29°C (84°F)182 mm (7.1 inches)85%extreme
September Weather28°C (83°F)166 mm (6.5 inches)82%extreme
October Weather27°C (81°F)284 mm (11.2 inches)84%extreme
November Weather26°C (79°F)185 mm (7.3 inches)85%very high
December Weather25°C (77°F)69 mm (2.7 inches)82%very high

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