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September Weather in Duc Phong, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Duc Phong, Vietnam hovers around 26°C (78°F), creating a warm and inviting atmosphere. Expect minimums of 21°C (70°F) and maximums soaring to 34°C (93°F). However, be prepared for the 386 mm (15.2 in) of rainfall spread over 29 days, contributing to a high average humidity of 89%.

September Temperature in Duc Phong

In September in Duc Phong, the average temperature is 26°C (78°F), with maximums reaching 34°C (93°F) and minimums dropping as low as 21°C (70°F). This pleasant weather makes it an ideal time for travelers to explore outdoor activities and enjoy the local attractions.

September Weather in Duc Phong: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Duc Phong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duc Phong, September typically has an average temperature of 26°C (78°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec787981818079787878787877
Data source: Temperature data for Duc Phong 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 Duc Phong

In Duc Phong in September, the precipitation amount is 386 mm (15.2 in) spread over 29 days.

September Precipitation Trends in Duc Phong

The chart displays monthly precipitation patterns in Duc Phong, 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 Duc Phong, September typically receives around 386 mm (15.2 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec24114813325832945845438630016039
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Duc Phong

In Duc Phong in September humidity is 89%. With an average temperature of 26°C (78°F), this humidity feels like you're walking through a warm, thick fog, making travel a sweaty and heavy experience that can quickly drain your energy.

September Average Humidity in Duc Phong

This chart illustrates the average monthly humidity levels in Duc Phong, 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 Duc Phong is approximately 89%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%58%61%80%87%89%90%89%87%87%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Duc Phong

In Duc Phong 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 Duc Phong, you can check here.

Maximum UV Index Levels in Duc Phong for September

The chart shows the monthly maximum UV Index (UVI) for Duc Phong 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 Duc Phong typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111416151413141514131110
Data source: Duc Phong 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 Duc Phong Compares to Other Months

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

This table compares monthly weather conditions in Duc Phong, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (78°F)24 mm (0.9 inches)65%extreme
February Weather26°C (80°F)11 mm (0.4 inches)61%extreme
March Weather27°C (81°F)48 mm (1.9 inches)58%extreme
April Weather27°C (81°F)133 mm (5.2 inches)60%extreme
May Weather27°C (81°F)258 mm (10.1 inches)80%extreme
June Weather26°C (80°F)329 mm (13.0 inches)87%extreme
July Weather26°C (78°F)458 mm (18.0 inches)89%extreme
August Weather26°C (78°F)454 mm (17.9 inches)90%extreme
September Weather26°C (78°F)386 mm (15.2 inches)89%extreme
October Weather26°C (78°F)300 mm (11.8 inches)87%extreme
November Weather26°C (78°F)160 mm (6.3 inches)87%extreme
December Weather25°C (78°F)39 mm (1.6 inches)80%very high

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