September Weather in Sansha, China

Last updated: August 22, 2025

In September, the average temperature in Sansha, China is a warm 26°C (80°F), with a minimum of 20°C (68°F) and a maximum reaching 33°C (92°F). Expect 112 mm (4.4 in) of precipitation spread over 17 days, contributing to an average humidity of 78%. Whether you're enjoying the warmth or bracing for the rain, be prepared for a tropical experience!

September Temperature in Sansha

In September in Sansha, the average temperature is 26°C (80°F), with maximums reaching up to 33°C (92°F) and minimums dropping as low as 20°C (68°F). This makes it an ideal time for travel, allowing you to enjoy pleasant weather and outdoor activities.

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 26°C (80°F), with highs reaching up to 33°C (92°F) and lows dropping to around 20°C (68°F).

Data source: Temperature data for Sansha generated using information from the Copernicus Climate Change Service.

September Precipitation in Sansha

In Sansha in September, the precipitation amount is 112 mm (4.4 in) spread out over 17 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 112 mm (4.4 inches) of precipitation spread over approximately 17 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Sansha

In Sansha in September, humidity is 78%. With an average temperature of 26°C (80°F), this humidity feels like a warm blanket wrapping around you, making travel feel sticky and heavy, while the air clings to your skin and encourages frequent breaks in shaded spots to stay cool.

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 78%, offering insight into how humid the weather typically is during this month.

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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sansha.

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 11, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	11°C (51°F)	51 mm (2.0 inches)	73%	high
February Weather	11°C (51°F)	80 mm (3.1 inches)	73%	very high
March Weather	14°C (57°F)	133 mm (5.2 inches)	80%	very high
April Weather	18°C (64°F)	104 mm (4.1 inches)	85%	extreme
May Weather	22°C (72°F)	144 mm (5.7 inches)	86%	extreme
June Weather	25°C (78°F)	314 mm (12.4 inches)	86%	extreme
July Weather	28°C (83°F)	147 mm (5.8 inches)	88%	extreme
August Weather	28°C (83°F)	265 mm (10.4 inches)	86%	extreme
September Weather	26°C (80°F)	112 mm (4.4 inches)	78%	extreme
October Weather	22°C (71°F)	105 mm (4.1 inches)	79%	very high
November Weather	17°C (64°F)	83 mm (3.3 inches)	80%	high
December Weather	13°C (55°F)	53 mm (2.1 inches)	81%	high