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September Weather in Quan Son, Vietnam

Last updated: August 28, 2025

In Quan Son, Vietnam, the average temperature in September is a pleasant 25°C (78°F). Expect a range between a comfortable 18°C (65°F) and a warm 33°C (93°F). With 212 mm (8.3 in) of precipitation spread over 22 days, it’s wise to prepare for some rain. Additionally, the average humidity sits at a muggy 82%, making for a unique tropical experience!

September Temperature in Quan Son

In September in Quan Son, the average temperature is 25°C (78°F). Maximums can reach 33°C (93°F), while minimums can drop as low as 18°C (65°F). This pleasant climate makes Quan Son an ideal destination for travelers seeking warmth and comfort.

September Weather in Quan Son: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Quan Son, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Quan Son, September typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (93°F) and lows dropping to around 18°C (65°F).
JanFebMarAprMayJunJulAugSepOctNovDec616370737881807978726861
Data source: Temperature data for Quan Son 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 Quan Son

In Quan Son in September, the total precipitation amount is 212 mm (8.3 in) spread over 22 days.

September Precipitation Trends in Quan Son

The chart displays monthly precipitation patterns in Quan Son, 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 Quan Son, September typically receives around 212 mm (8.3 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec4034561432081753513982122285539
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Quan Son

In Quan Son in September, humidity is 82%. With an average temperature of 25°C (78°F), this humidity feels like a warm, heavy blanket wrapping around you, making outdoor activities a bit more challenging and encouraging you to seek shade or a cool spot during your travels.

September Average Humidity in Quan Son

This chart illustrates the average monthly humidity levels in Quan Son, 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 Quan Son is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%65%57%50%68%79%91%92%82%76%72%68%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Quan Son

In Quan Son 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 Quan Son, you can check here.

Maximum UV Index Levels in Quan Son for September

The chart shows the monthly maximum UV Index (UVI) for Quan Son 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 Quan Son typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131414141298
Data source: Quan Son 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 Quan Son Compares to Other Months

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

This table compares monthly weather conditions in Quan Son, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather16°C (61°F)40 mm (1.6 inches)63%very high
February Weather17°C (63°F)34 mm (1.3 inches)65%extreme
March Weather21°C (70°F)56 mm (2.2 inches)57%extreme
April Weather23°C (73°F)143 mm (5.6 inches)50%extreme
May Weather26°C (78°F)208 mm (8.2 inches)68%extreme
June Weather27°C (82°F)175 mm (6.9 inches)79%extreme
July Weather27°C (80°F)351 mm (13.8 inches)91%extreme
August Weather26°C (79°F)398 mm (15.7 inches)92%extreme
September Weather25°C (78°F)212 mm (8.3 inches)82%extreme
October Weather22°C (73°F)228 mm (9.0 inches)76%extreme
November Weather20°C (68°F)55 mm (2.2 inches)72%very high
December Weather16°C (61°F)39 mm (1.5 inches)68%very high

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