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September Weather in Hai Duong, Vietnam

Last updated: August 28, 2025

In September, the average temperature in Hai Duong, Vietnam hovers around a warm 28°C (83°F). Expect a range where the minimum dips to 21°C (71°F) and the maximum can soar to 36°C (98°F). During this month, be prepared for 261 mm (10.3 in) of precipitation spread across approximately 22 days, contributing to an average humidity level of 82%.

September Temperature in Hai Duong

In September in Hai Duong, the average temperature is 28°C (83°F). Maximums can reach 36°C (98°F), and minimums can be as low as 21°C (71°F). This climate makes Hai Duong an ideal destination for travelers seeking warm and pleasant weather.

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

The chart illustrates September temperature patterns in Hai Duong, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Hai Duong, 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 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec646672768387868583777265
Data source: Temperature data for Hai Duong 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 Hai Duong

In Hai Duong in September, the total precipitation amount is 261 mm (10.3 in) spread over 22 days.

September Precipitation Trends in Hai Duong

The chart displays monthly precipitation patterns in Hai Duong, 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 Hai Duong, September typically receives around 261 mm (10.3 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec353760961842052924172612324640
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Hai Duong

In Hai Duong in September, humidity is 82%. With an average temperature of 28°C (83°F), this humidity feels like stepping into a warm, damp embrace, which can make traveling feel heavy and exhausting, as every movement can be met with a sticky veil of moisture that clings to the skin.

September Average Humidity in Hai Duong

This chart illustrates the average monthly humidity levels in Hai Duong, 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 Hai Duong is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec66%71%69%64%73%81%90%89%82%77%72%71%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Hai Duong

In Hai Duong 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 Hai Duong.

Maximum UV Index Levels in Hai Duong for September

The chart shows the monthly maximum UV Index (UVI) for Hai Duong 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 Hai Duong typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec810121313121313131197
Data source: Hai Duong 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 Hai Duong Compares to Other Months

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

This table compares monthly weather conditions in Hai Duong, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)35 mm (1.4 inches)66%very high
February Weather19°C (66°F)37 mm (1.5 inches)71%very high
March Weather22°C (72°F)60 mm (2.4 inches)69%extreme
April Weather24°C (76°F)96 mm (3.8 inches)64%extreme
May Weather28°C (83°F)184 mm (7.2 inches)73%extreme
June Weather31°C (87°F)205 mm (8.1 inches)81%extreme
July Weather30°C (86°F)292 mm (11.5 inches)90%extreme
August Weather29°C (85°F)417 mm (16.4 inches)89%extreme
September Weather28°C (83°F)261 mm (10.3 inches)82%extreme
October Weather25°C (77°F)232 mm (9.1 inches)77%extreme
November Weather22°C (73°F)46 mm (1.8 inches)72%very high
December Weather18°C (65°F)40 mm (1.6 inches)71%high

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