Con Dao Island weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Con Dao Island in September. Check more long-term weather averages for Con Dao Island in September before you book your next holiday to Vietnam in 2025/2026.

  • 31°C maximum daytime temperature in September in Con Dao Island31
    31°C max day temperature
  • 5 hours of sunshine per day
  • 21 days with some rainfall in September in Con Dao Island21
    21 days with some rainfall
  • 24°C minimum night-time temperature in September in Con Dao Island24
    24°C min night temperature
  • 12 hours of daylight per day in September in Con Dao Island12
    12 hours of daylight per day
  • High heat & humidity in September in Con Dao IslandH
    High heat & humidity
  • 285 mm monthly rainfall in September in Con Dao Island285
    285 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Con Dao Island11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Con Dao Island29
    29°C sea temperature

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The September weather guide for Vietnam (Con Dao Island) 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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How hot is it in Con Dao Island in September?

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

How sunny is it in Con Dao Island in September?

There are normally 5 hours of bright sunshine each day in Con Dao Island in September - that's 44% of daylight hours.

How warm is the sea around Con Dao Island in September?

The average sea temperature around Con Dao Island in September is 29°C.

Does it rain in Con Dao Island in September?

There are usually 21 days with some rain in Con Dao Island in September and the average monthly rainfall is 285mm.

Con Dao Island September sunrise & sunset times

Browse the sunrise and sunset times for Con Dao Island in September 2025. Select a month to view Con Dao Island sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:45 18:02
Monday, 15th September 2025 05:44 17:54
Tuesday, 30th September 2025 05:42 17:45

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