Mendoza weather in September 2025

Expect 20°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Mendoza in September. Check more long-term weather averages for Mendoza in September before you book your next holiday to Argentina in 2025/2026.

  • 20°C maximum daytime temperature in September in Mendoza20
    20°C max day temperature
  • 8 hours of sunshine per day
  • 4 days with some rainfall in September in Mendoza4
    4 days with some rainfall
  • 6°C minimum night-time temperature in September in Mendoza6
    6°C min night temperature
  • 12 hours of daylight per day in September in Mendoza12
    12 hours of daylight per day
  • No heat & humidity in September in Mendoza0
    No heat & humidity
  • 10 mm monthly rainfall in September in Mendoza10
    10 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Mendoza6
    6 (High) UV index

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The September weather guide for Argentina (Mendoza) 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 Argentina

How hot is it in Mendoza in September?

Daytime temperatures usually reach 20°C in Mendoza in September, falling to 6°C at night.

How sunny is it in Mendoza in September?

There are normally 8 hours of bright sunshine each day in Mendoza in September - that's 64% of daylight hours.

Does it rain in Mendoza in September?

There are usually 4 days with some rain in Mendoza in September and the average monthly rainfall is 10mm.

Mendoza September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:52 19:18
Monday, 15th September 2025 07:34 19:27
Tuesday, 30th September 2025 07:14 19:37

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