Buenos Aires Weather in September
In September, Buenos Aires averages a high of 19°C (67°F) and a low of 10°C (50°F), based on 54 years of historical weather data from AEROPARQUE JORGE NEWBERY.
19°C
Average high
67°F
10°C
Average low
50°F
36°C
Record high
96°F · 2013
-4°C
Record low
24°F · 1990
What to Expect in Buenos Aires in September
Typical September days in Buenos Aires reach 19°C (67°F) during the afternoon and cool to around 10°C (50°F) overnight. On average, measurable rain falls on about 36% of days this month. Over the past 54 years, September temperatures in Buenos Aires have ranged from a record high of 36°C (2013) down to a record low of -4°C (1990).
For a day-by-day look or other months, see the full Buenos Aires weather history.