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September Weather in Trieu Son, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Trieu Son, Vietnam is a warm 28°C (83°F). Expect a comfortable minimum of 22°C (71°F) and a sweltering maximum that can reach up to 36°C (98°F). However, don't forget your umbrella, as this month sees about 237 mm (9.3 in) of rainfall spread across 21 days. With an average humidity of 84%, it's a perfect time to enjoy the tropical vibes while staying hydrated!

September Temperature in Trieu Son

In September in Trieu Son, the average temperature is 28°C (83°F), with maximums reaching 36°C (98°F) and minimums dropping to as low as 22°C (71°F). It's an ideal time for travelers seeking warm weather and plenty of sunshine.

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

The chart illustrates September temperature patterns in Trieu Son, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Trieu Son, September typically has an average temperature of 28°C (83°F), with highs reaching up to 36°C (98°F) and lows dropping to around 22°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec656673778387868482777266
Data source: Temperature data for Trieu 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 Trieu Son

In Trieu Son in September, the total precipitation amount is 237 mm (9.3 in) spread over 21 days.

September Precipitation Trends in Trieu Son

The chart displays monthly precipitation patterns in Trieu 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 Trieu Son, September typically receives around 237 mm (9.3 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec4033551072031162793452372736945
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Trieu Son

In Trieu Son in September, humidity is 84%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket enveloping you, making every step feel heavier and the air almost stifling for traveling.

September Average Humidity in Trieu Son

This chart illustrates the average monthly humidity levels in Trieu 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 Trieu Son is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec74%77%74%70%78%82%90%90%84%81%78%78%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Trieu Son

In Trieu 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 Trieu Son, you can check here.

Maximum UV Index Levels in Trieu Son for September

The chart shows the monthly maximum UV Index (UVI) for Trieu 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 Trieu Son typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121313131414141297
Data source: Trieu 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 Trieu Son Compares to Other Months

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

This table compares monthly weather conditions in Trieu Son, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)40 mm (1.6 inches)74%very high
February Weather19°C (66°F)33 mm (1.3 inches)77%very high
March Weather23°C (73°F)55 mm (2.2 inches)74%extreme
April Weather25°C (77°F)107 mm (4.2 inches)70%extreme
May Weather28°C (83°F)203 mm (8.0 inches)78%extreme
June Weather31°C (87°F)116 mm (4.6 inches)82%extreme
July Weather30°C (86°F)279 mm (11.0 inches)90%extreme
August Weather29°C (84°F)345 mm (13.6 inches)90%extreme
September Weather28°C (83°F)237 mm (9.3 inches)84%extreme
October Weather25°C (77°F)273 mm (10.7 inches)81%extreme
November Weather22°C (72°F)69 mm (2.7 inches)78%very high
December Weather19°C (66°F)45 mm (1.8 inches)78%high

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