Hoi An weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Hoi An in September. Check more long-term weather averages for Hoi An in September before you book your next holiday to Vietnam in 2025/2026.

  • 31°C maximum daytime temperature in September in Hoi An31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in September in Hoi An19
    19 days with some rainfall
  • 24°C minimum night-time temperature in September in Hoi An24
    24°C min night temperature
  • 12 hours of daylight per day in September in Hoi An12
    12 hours of daylight per day
  • High heat & humidity in September in Hoi AnH
    High heat & humidity
  • 297 mm monthly rainfall in September in Hoi An297
    297 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Hoi An11
    11+ (Extreme) UV index

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The September weather guide for Vietnam (Hoi An) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Vietnam

How hot is it in Hoi An in September?

Daytime temperatures usually reach 31°C in Hoi An in September with high heat and humidity, falling to 24°C at night.

How sunny is it in Hoi An in September?

There are normally 6 hours of bright sunshine each day in Hoi An in September - that's 46% of daylight hours.

Does it rain in Hoi An in September?

There are usually 19 days with some rain in Hoi An in September and the average monthly rainfall is 297mm.

What is the chance of a typhoon in Hoi An in September?

On average 2.7 days in September in Hoi An are likely to be affected by the passage of one or more tropical storms.

Hoi An September sunrise & sunset times

Browse the sunrise and sunset times for Hoi An in September 2025. Select a month to view Hoi An sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:34 17:59
Monday, 15th September 2025 05:35 17:49
Tuesday, 30th September 2025 05:36 17:37

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