Bahia Blanca weather in September 2025

Expect 18°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Bahia Blanca in September. Check more long-term weather averages for Bahia Blanca in September before you book your next holiday to Argentina in 2025/2026.

  • 18°C maximum daytime temperature in September in Bahia Blanca18
    18°C max day temperature
  • 6 hours of sunshine per day
  • 6 days with some rainfall in September in Bahia Blanca6
    6 days with some rainfall
  • 5°C minimum night-time temperature in September in Bahia Blanca5
    5°C min night temperature
  • 12 hours of daylight per day in September in Bahia Blanca12
    12 hours of daylight per day
  • No heat & humidity in September in Bahia Blanca0
    No heat & humidity
  • 46 mm monthly rainfall in September in Bahia Blanca46
    46 mm of monthly rainfall
  • UV (maximum) index 5 (Moderate) in September in Bahia Blanca5
    5 (Moderate) UV index
  • 10°C sea temperature in September in Bahia Blanca10
    10°C sea temperature

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The September weather guide for Argentina (Bahia Blanca) 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 Bahia Blanca in September?

Daytime temperatures usually reach 18°C in Bahia Blanca in September, falling to 5°C at night.

How sunny is it in Bahia Blanca in September?

There are normally 6 hours of bright sunshine each day in Bahia Blanca in September - that's 53% of daylight hours.

Is the sea cold around Bahia Blanca in September?

The average sea temperature around Bahia Blanca in September is 10°C.

Does it rain in Bahia Blanca in September?

There are usually 6 days with some rain in Bahia Blanca in September and the average monthly rainfall is 46mm.

Bahia Blanca September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 07:31 18:48
Monday, 15th September 2025 07:09 19:00
Tuesday, 30th September 2025 06:45 19:13

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