Ushuaia weather in September 2025

Expect 45°F daytime maximum temperatures in the shade with on average 5 hours of sunshine per day in Ushuaia in September. Check more long-term weather averages for Ushuaia in September before you book your next holiday to Argentina in 2025/2026.

  • 45°F maximum daytime temperature in September in Ushuaia45
    45°F max day temperature
  • 5 hours of sunshine per day
  • 7 days with some rainfall in September in Ushuaia7
    7 days with some rainfall
  • 30°F minimum night-time temperature in September in Ushuaia30
    30°F min night temperature
  • 12 hours of daylight per day in September in Ushuaia12
    12 hours of daylight per day
  • No heat & humidity in September in Ushuaia0
    No heat & humidity
  • 1.6 inches monthly rainfall in September in Ushuaia1.6
    1.6 inches of monthly rainfall
  • UV (maximum) index 2 (Low) in September in Ushuaia2
    2 (Low) UV index
  • 41°F sea temperature in September in Ushuaia41
    41°F sea temperature

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The September weather guide for Argentina (Ushuaia) 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)  |  Imperial (°F)

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More about Argentina

How cold is it in Ushuaia in September?

Daytime temperatures usually reach 45°F in Ushuaia in September, falling to 30°F at night.

How sunny is it in Ushuaia in September?

There are normally 5 hours of bright sunshine each day in Ushuaia in September - that's 46% of daylight hours.

How warm is the sea around Ushuaia in September?

The average sea temperature around Ushuaia in September is 41°F.

Does it rain in Ushuaia in September?

There are usually 7 days with some rain in Ushuaia in September and the average monthly rainfall is 1.6 inches.

Ushuaia September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 08:14 18:53
Monday, 15th September 2025 07:39 19:19
Tuesday, 30th September 2025 07:00 19:47

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