September Weather in Haiyou, China

Last updated: August 22, 2025

In September, the average temperature in Haiyou, China hovers around 26°C (78°F), making it a warm destination. Temperatures can dip to a minimum of 16°C (60°F) and reach a soaring maximum of 38°C (100°F). Expect some precipitation during this time, with 135 mm (5.3 in) of rain spread over 13 days. Additionally, humidity levels average a comfortable 78%, ensuring a tropical ambiance throughout the month.

September Temperature in Haiyou

In September in Haiyou, the average temperature is 26°C (78°F), with maximums reaching 38°C (100°F) and minimums dropping as low as 16°C (60°F). It’s an ideal time for travelers looking for warm weather and plenty of outdoor activities.

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

The chart illustrates September temperature patterns in Haiyou, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Haiyou, September typically has an average temperature of 26°C (78°F), with highs reaching up to 38°C (100°F) and lows dropping to around 16°C (60°F).

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

September Precipitation in Haiyou

In Haiyou in September, the precipitation amount is 135 mm (5.3 in) over the course of 13 days.

September Precipitation Trends in Haiyou

The chart displays monthly precipitation patterns in Haiyou, 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 Haiyou, September typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 13 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 Haiyou

In Haiyou in September humidity is 78%. With an average temperature of 26°C (78°F), this humidity feels like a warm embrace, making travel a bit more challenging as the air is thick and can leave you feeling sticky and sluggish. Be sure to stay hydrated and take breaks to enjoy the local sights without overheating.

September Average Humidity in Haiyou

This chart illustrates the average monthly humidity levels in Haiyou, 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 Haiyou 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 Haiyou

In Haiyou 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 Haiyou.

Maximum UV Index Levels in Haiyou for September

The chart shows the monthly maximum UV Index (UVI) for Haiyou 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 Haiyou typically reaches 11, which falls under the extreme exposure category.

Data source: Haiyou 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 Haiyou Compares to Other Months

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

This table compares monthly weather conditions in Haiyou, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	58 mm (2.3 inches)	68%	high
February Weather	9°C (48°F)	59 mm (2.3 inches)	73%	high
March Weather	13°C (56°F)	113 mm (4.5 inches)	80%	very high
April Weather	17°C (64°F)	94 mm (3.7 inches)	86%	very high
May Weather	22°C (72°F)	184 mm (7.2 inches)	88%	extreme
June Weather	25°C (77°F)	294 mm (11.6 inches)	89%	extreme
July Weather	28°C (83°F)	281 mm (11.0 inches)	91%	extreme
August Weather	29°C (84°F)	216 mm (8.5 inches)	88%	extreme
September Weather	26°C (78°F)	135 mm (5.3 inches)	78%	extreme
October Weather	20°C (69°F)	108 mm (4.3 inches)	79%	very high
November Weather	15°C (60°F)	68 mm (2.7 inches)	80%	high
December Weather	9°C (49°F)	49 mm (1.9 inches)	80%	moderate