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September Weather in Duyen Hai, Vietnam

Last updated: August 28, 2025

In Duyen Hai, Vietnam, the average temperature in September hovers around 28°C (82°F), creating a warm and inviting atmosphere. Expect nighttime lows to drop to a comfortable 25°C (77°F), with daytime highs reaching up to 32°C (90°F). While enjoying the warmth, be prepared for precipitation totaling 226 mm (8.9 in) across 27 days, contributing to an average humidity level of 85%. Embrace the tropical vibes and ensure you're ready for a refreshing shower amidst the warmth!

September Temperature in Duyen Hai

In September in Duyen Hai, the average temperature is 28°C (82°F), with maximums reaching 32°C (90°F) and minimums dropping to 25°C (77°F). It's an ideal time to visit for those who enjoy warm weather and outdoor activities.

September Weather in Duyen Hai: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Duyen Hai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duyen Hai, September typically has an average temperature of 28°C (82°F), with highs reaching up to 32°C (90°F) and lows dropping to around 25°C (77°F).
JanFebMarAprMayJunJulAugSepOctNovDec797981838483828282818180
Data source: Temperature data for Duyen Hai 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 Duyen Hai

In Duyen Hai in September, the precipitation amount is 226 mm (8.9 in) spread over 27 days, indicating a significant level of rainfall during that period.

September Precipitation Trends in Duyen Hai

The chart displays monthly precipitation patterns in Duyen Hai, 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 Duyen Hai, September typically receives around 226 mm (8.9 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec4681363166195218228226300228106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Duyen Hai

In Duyen Hai in September humidity is 85%. With an average temperature of 28°C (82°F), this humidity feels like a warm blanket enveloping you, making outdoor activities a sweaty endeavor and requiring frequent breaks to stay refreshed.

September Average Humidity in Duyen Hai

This chart illustrates the average monthly humidity levels in Duyen Hai, 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 Duyen Hai is approximately 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%75%76%78%80%82%83%85%85%83%86%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Duyen Hai

In Duyen Hai 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 Duyen Hai, you can check here.

Maximum UV Index Levels in Duyen Hai for September

The chart shows the monthly maximum UV Index (UVI) for Duyen Hai 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 Duyen Hai typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111416151413141414141111
Data source: Duyen Hai 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 Duyen Hai Compares to Other Months

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

This table compares monthly weather conditions in Duyen Hai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)46 mm (1.8 inches)77%extreme
February Weather26°C (79°F)8 mm (0.3 inches)75%extreme
March Weather27°C (81°F)13 mm (0.5 inches)76%extreme
April Weather28°C (83°F)63 mm (2.5 inches)78%extreme
May Weather29°C (84°F)166 mm (6.5 inches)80%extreme
June Weather28°C (83°F)195 mm (7.7 inches)82%extreme
July Weather28°C (82°F)218 mm (8.6 inches)83%extreme
August Weather28°C (82°F)228 mm (9.0 inches)85%extreme
September Weather28°C (82°F)226 mm (8.9 inches)85%extreme
October Weather27°C (82°F)300 mm (11.8 inches)83%extreme
November Weather27°C (82°F)228 mm (9.0 inches)86%extreme
December Weather26°C (80°F)105 mm (4.2 inches)85%extreme

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