September Weather in Hoang Sa, Vietnam

Last updated: August 28, 2025

In Hoang Sa, Vietnam, the average temperature in September hovers around 28°C (83°F), with a minimum of 26°C (79°F) and a maximum reaching 30°C (87°F). Be prepared for 170 mm (6.7 in) of precipitation spread over 21 days, contributing to an average humidity of 81%. Expect a warm and humid atmosphere during your stay!

September Temperature in Hoang Sa

In September in Hoang Sa, the average temperature is 28°C (83°F), with maximums reaching up to 30°C (87°F) and minimums dropping as low as 26°C (79°F). This mild and warm climate makes it an ideal destination for travelers seeking pleasant weather.

September Weather in Hoang Sa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Hoang Sa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hoang Sa, 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 26°C (79°F).

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

September Precipitation in Hoang Sa

In Hoang Sa in September, the precipitation amount is 170 mm (6.7 in) over the course of 21 days.

September Precipitation Trends in Hoang Sa

The chart displays monthly precipitation patterns in Hoang Sa, 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 Hoang Sa, September typically receives around 170 mm (6.7 inches) of precipitation spread over approximately 21 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 Hoang Sa

In Hoang Sa in September, humidity is 81%. With an average temperature of 28°C (83°F), this humidity feels like walking through a warm, damp blanket, making travel feel both stifling and exhausting.

September Average Humidity in Hoang Sa

This chart illustrates the average monthly humidity levels in Hoang Sa, 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 Hoang Sa is approximately 81%, 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 Hoang Sa

In Hoang Sa 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 Hoang Sa, you can check here.

Maximum UV Index Levels in Hoang Sa for September

The chart shows the monthly maximum UV Index (UVI) for Hoang Sa 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 Hoang Sa typically reaches 14, which falls under the extreme exposure category.

Data source: Hoang Sa 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 Hoang Sa Compares to Other Months

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

This table compares monthly weather conditions in Hoang Sa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	35 mm (1.4 inches)	80%	very high
February Weather	24°C (76°F)	23 mm (0.9 inches)	80%	extreme
March Weather	26°C (78°F)	16 mm (0.6 inches)	83%	extreme
April Weather	27°C (81°F)	28 mm (1.1 inches)	86%	extreme
May Weather	29°C (84°F)	85 mm (3.3 inches)	83%	extreme
June Weather	29°C (85°F)	137 mm (5.4 inches)	81%	extreme
July Weather	29°C (84°F)	240 mm (9.5 inches)	84%	extreme
August Weather	29°C (84°F)	184 mm (7.2 inches)	84%	extreme
September Weather	28°C (83°F)	170 mm (6.7 inches)	81%	extreme
October Weather	27°C (82°F)	278 mm (10.9 inches)	83%	extreme
November Weather	26°C (80°F)	181 mm (7.1 inches)	86%	very high
December Weather	25°C (77°F)	64 mm (2.5 inches)	82%	very high