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September Weather in Longnan, China

Last updated: August 22, 2025

In September, the average temperature in Longnan, China hovers around 27°C (81°F), offering a warm climate ideal for outdoor activities. The temperature range varies significantly, with a minimum of 17°C (63°F) and peaking at a steamy 39°C (103°F). Visitors can expect to encounter precipitation totaling about 88 mm (3.4 in) spread over 13 days, contributing to an average humidity level of 62%. Enjoy the warmth while staying prepared for those occasional showers!

September Temperature in Longnan

In September in Longnan, the average temperature is 27°C (81°F). Maximums can reach 39°C (103°F) and minimums can be as low as 17°C (63°F). Be prepared for warm days and cooler evenings when traveling to Longnan during this time.

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 27°C (81°F), with highs reaching up to 39°C (103°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec505262677681858481716252
Data source: Temperature data for Longnan 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 Longnan

In Longnan in September, the precipitation amount is 88 mm (3.4 in) occurring over 13 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 88 mm (3.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec39711441541592358712888414527
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Longnan

In Longnan in September humidity is 62%. With an average temperature of 27°C (81°F), this humidity feels like walking through a warm, soft blanket, making travel feel both cozy and slightly sluggish as you navigate through the warmth.

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 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%77%73%85%83%89%88%62%56%63%70%
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.
JanFebMarAprMayJunJulAugSepOctNovDec79111113131313111086
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.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)39 mm (1.5 inches)63%high
February Weather11°C (53°F)71 mm (2.8 inches)66%very high
March Weather17°C (62°F)144 mm (5.7 inches)77%extreme
April Weather20°C (68°F)154 mm (6.0 inches)73%extreme
May Weather24°C (76°F)159 mm (6.2 inches)85%extreme
June Weather27°C (81°F)235 mm (9.3 inches)83%extreme
July Weather29°C (85°F)87 mm (3.4 inches)89%extreme
August Weather29°C (84°F)128 mm (5.0 inches)88%extreme
September Weather27°C (81°F)88 mm (3.4 inches)62%extreme
October Weather22°C (71°F)41 mm (1.6 inches)56%very high
November Weather17°C (62°F)45 mm (1.8 inches)63%very high
December Weather11°C (52°F)27 mm (1.1 inches)70%high

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