September Weather in Longnan, China

Last updated: August 23, 2025

In Longnan, China, the average temperature in September hovers around 24°C (75°F), offering a pleasant climate. Expect temperature extremes ranging from a cool 13°C (56°F) to a warm 35°C (95°F). During this month, precipitation totals about 112 mm (4.4 in) spread over 12 days, and the average humidity sits comfortably at 67%.

September Temperature in Longnan

In September in Longnan, the average temperature is 24°C (75°F). The maximum can reach 35°C (95°F), and the minimum can be as low as 13°C (56°F). This makes it an ideal time for travelers to enjoy a pleasant climate while exploring the area.

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

The chart illustrates September temperature patterns in Longnan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Longnan, September typically has an average temperature of 24°C (75°F), with highs reaching up to 35°C (95°F) and lows dropping to around 13°C (56°F).

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

September Precipitation in Longnan

In Longnan in September, the total precipitation amount is 112 mm (4.4 in), falling over the course of 12 days.

September Precipitation Trends in Longnan

The chart displays monthly precipitation patterns in Longnan, 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 Longnan, September typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 12 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 Longnan

In Longnan in September humidity is 67%. With an average temperature of 24°C (75°F), this humidity feels like a warm and sticky embrace, making traveling a bit uncomfortable as you find yourself seeking shade and refreshing drinks more often.

September Average Humidity in Longnan

This chart illustrates the average monthly humidity levels in Longnan, 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 Longnan is approximately 67%, 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 Longnan

In Longnan 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 Longnan.

Maximum UV Index Levels in Longnan for September

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

Data source: Longnan 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 Longnan Compares to Other Months

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

This table compares monthly weather conditions in Longnan, 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)	55 mm (2.2 inches)	66%	high
February Weather	8°C (47°F)	89 mm (3.5 inches)	71%	very high
March Weather	13°C (56°F)	153 mm (6.0 inches)	81%	extreme
April Weather	17°C (62°F)	131 mm (5.1 inches)	84%	extreme
May Weather	21°C (70°F)	227 mm (9.0 inches)	87%	extreme
June Weather	24°C (75°F)	325 mm (12.8 inches)	84%	extreme
July Weather	27°C (80°F)	155 mm (6.1 inches)	88%	extreme
August Weather	27°C (80°F)	159 mm (6.3 inches)	85%	extreme
September Weather	24°C (75°F)	112 mm (4.4 inches)	67%	extreme
October Weather	18°C (65°F)	57 mm (2.2 inches)	72%	very high
November Weather	13°C (57°F)	65 mm (2.5 inches)	77%	high
December Weather	8°C (47°F)	49 mm (1.9 inches)	80%	high