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September Weather in Dong Ha, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Dong Ha, Vietnam reaches a warm 28°C (83°F). Minimum temperatures can dip to 22°C (73°F), while maximums soar to a sizzling 39°C (102°F). With precipitation totaling 284 mm (11.2 in) over 21 days and an average humidity of 87%, be prepared for a sultry experience!

September Temperature in Dong Ha

In September in Dong Ha, the average temperature is 28°C (83°F), with maximums reaching up to 39°C (102°F) and minimums dropping as low as 22°C (73°F). This warm climate makes Dong Ha an ideal destination for travelers seeking sunny adventures and outdoor activities.

September Weather in Dong Ha: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Dong Ha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Dong Ha, September typically has an average temperature of 28°C (83°F), with highs reaching up to 39°C (102°F) and lows dropping to around 22°C (73°F).
JanFebMarAprMayJunJulAugSepOctNovDec707076798488868583787570
Data source: Temperature data for Dong Ha 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 Dong Ha

In Dong Ha in September, the precipitation amount is 284 mm (11.2 in) spread over 21 days.

September Precipitation Trends in Dong Ha

The chart displays monthly precipitation patterns in Dong Ha, 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 Dong Ha, September typically receives around 284 mm (11.2 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec153897910312654191128284567506292
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Dong Ha

In Dong Ha in September humidity is 87%. With an average temperature of 28°C (83°F), this humidity feels like you're enveloped in a warm, sticky blanket, making outdoor activities slightly uncomfortable and travel plans require frequent breaks for hydration and respite from the heat.

September Average Humidity in Dong Ha

This chart illustrates the average monthly humidity levels in Dong Ha, 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 Dong Ha is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec77%73%64%60%73%82%90%92%87%85%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Dong Ha

In Dong Ha in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Dong Ha.

Maximum UV Index Levels in Dong Ha for September

The chart shows the monthly maximum UV Index (UVI) for Dong Ha 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 Dong Ha typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10121414141314141312109
Data source: Dong Ha 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 Dong Ha Compares to Other Months

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

This table compares monthly weather conditions in Dong Ha, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)153 mm (6.0 inches)77%very high
February Weather21°C (70°F)89 mm (3.5 inches)73%extreme
March Weather25°C (76°F)79 mm (3.1 inches)64%extreme
April Weather26°C (79°F)103 mm (4.1 inches)60%extreme
May Weather29°C (84°F)126 mm (5.0 inches)73%extreme
June Weather31°C (88°F)54 mm (2.1 inches)82%extreme
July Weather30°C (86°F)191 mm (7.5 inches)90%extreme
August Weather30°C (85°F)128 mm (5.0 inches)92%extreme
September Weather28°C (83°F)284 mm (11.2 inches)87%extreme
October Weather26°C (79°F)567 mm (22.3 inches)85%extreme
November Weather24°C (75°F)506 mm (19.9 inches)84%very high
December Weather21°C (71°F)292 mm (11.5 inches)83%very high

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