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September Weather in Bac Yen, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Bac Yen, Vietnam is a pleasant 24°C (76°F). Expect a range where the minimum dips to 17°C (63°F) and the maximum can soar up to 33°C (91°F). Be prepared for some rain as precipitation averages 157 mm (6.2 in) over 21 days, and don’t forget that the average humidity sits at a tropical 82%.

September Temperature in Bac Yen

In September in Bac Yen, the average temperature is 24°C (76°F). Maximums can reach 33°C (91°F), while minimums can dip as low as 17°C (63°F). This makes it an ideal time to visit Bac Yen, offering warm days and comfortable evenings perfect for exploring the local attractions.

September Weather in Bac Yen: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Bac Yen, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Bac Yen, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (91°F) and lows dropping to around 17°C (63°F).
JanFebMarAprMayJunJulAugSepOctNovDec596068717679787776706659
Data source: Temperature data for Bac Yen 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 Bac Yen

In Bac Yen in September, the total precipitation amount is 157 mm (6.2 in), falling over a span of 21 days.

September Precipitation Trends in Bac Yen

The chart displays monthly precipitation patterns in Bac Yen, 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 Bac Yen, September typically receives around 157 mm (6.2 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec7048971641581753053591571794448
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Bac Yen

In Bac Yen in September, humidity is 82%. With an average temperature of 24°C (76°F), this humidity feels like wearing a warm, damp blanket, making travel uncomfortable and sticky as you explore.

September Average Humidity in Bac Yen

This chart illustrates the average monthly humidity levels in Bac Yen, 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 Bac Yen 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 Bac Yen

In Bac Yen 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 Bac Yen, you can check here.

Maximum UV Index Levels in Bac Yen for September

The chart shows the monthly maximum UV Index (UVI) for Bac Yen 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 Bac Yen typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec8101313141415141412108
Data source: Bac Yen 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 Bac Yen Compares to Other Months

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

This table compares monthly weather conditions in Bac Yen, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)70 mm (2.8 inches)63%very high
February Weather16°C (60°F)48 mm (1.9 inches)65%very high
March Weather20°C (68°F)97 mm (3.8 inches)57%extreme
April Weather22°C (71°F)164 mm (6.5 inches)50%extreme
May Weather25°C (77°F)158 mm (6.2 inches)68%extreme
June Weather26°C (79°F)175 mm (6.9 inches)79%extreme
July Weather26°C (78°F)305 mm (12.0 inches)91%extreme
August Weather25°C (78°F)359 mm (14.1 inches)92%extreme
September Weather24°C (76°F)157 mm (6.2 inches)82%extreme
October Weather21°C (71°F)179 mm (7.0 inches)76%extreme
November Weather19°C (66°F)44 mm (1.7 inches)72%very high
December Weather15°C (59°F)48 mm (1.9 inches)68%very high

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