Buenos Aires weather in September 2021

Get the latest coronavirus (COVID-19) updates for Argentina with current travel advice, statistics and online resources.

  • 19°C maximum daytime temperature in September in Buenos Aires19
    19°C max day temperature
  • 6 hours of sunshine per day
  • 7 days with some rainfall in September in Buenos Aires7
    7 days with some rainfall
  • 10°C minimum night-time temperature in September in Buenos Aires10
    10°C min night temperature
  • 12 hours of daylight per day in September in Buenos Aires12
    12 hours of daylight per day
  • No heat & humidity in September in Buenos Aires0
    No heat & humidity
  • 69 mm monthly rainfall in September in Buenos Aires69
    69 mm of monthly rainfall
  • UV (maximum) index 6 (High) in September in Buenos Aires6
    6 (High) UV index
  • 15°C sea temperature in September in Buenos Aires15
    15°C sea temperature

Recommended for Argentina

  • Top deals & discounts
  • Buenos Aires weather overview
  • Buenos Aires climate averages by month
  • More destinations
  • Best time to go to Buenos Aires
  • Buenos Aires 5-day weather forecast

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

The September weather guide for Buenos Aires, Argentina 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.

  • Save 15% on tours & adventures to South America
  • Book trip to the Amazon, Machu Picchu, Galapagos & more
  • Travel before 31st October 2021 (inclusive)

Expires at 23:59 on Saturday 31st Oct 2020 · View all G Adventures offers

How hot is it in Buenos Aires in September?

Daytime temperatures usually reach 19°C in Buenos Aires in September, falling to 10°C at night.

How sunny is it in Buenos Aires in September?

There are normally 6 hours of bright sunshine each day in Buenos Aires in September - that's 54% of daylight hours.

How warm is the sea around Buenos Aires in September?

The average sea temperature around Buenos Aires in September is 15°C.

Does it rain in Buenos Aires in September?

There are usually 7 days with some rain in Buenos Aires in September and the average monthly rainfall is 69mm.

Buenos Aires sunrise & sunset times for September 2021

Browse the sunrise & sunset times for Buenos Aires in September 2021. Select a month to view Buenos Aires sunrise & sunset times for the next twelve months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Wednesday, 1st September 2021 07:12 18:35
Wednesday, 15th September 2021 06:53 18:45
Thursday, 30th September 2021 06:31 18:56
  • Check out top flight deals & low fares from popular airlines
  • Search for return & one-way flights or multi-city trips
  • Airlines include BA, Virgin Atlantic, United & Turkish Airlines

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

Back to top

Discover more about Buenos Aires

Where is hot in Argentina in September for 2021/2022?

Below are average maximum temperatures at popular destinations in Argentina in September. Select a destination to see more weather parameters.

More destinations & map >>

Related posts

Popular travel offers

Top ^

*affiliate links: find out how we are funded and why this helps us remain free to use.