Buenos Aires Weather in December
In December, Buenos Aires averages a high of 28°C (83°F) and a low of 19°C (66°F), from 51 years of daily records (1971–2025).
28°C
Average high
83°F
19°C
Average low
66°F
41°C
Record high
105°F · December 18, 1995
6°C
Record low
42°F · December 5, 1971
What December Is Like in Buenos Aires
- The coldest December reading, 6°C (42°F) on December 5, 1971, has not been matched in 54 years.
- The December heat record, 41°C (105°F) on December 18, 1995, has stood for 30 years.
- A typical December brings 1 day above 35°C (95°F).
- December in Buenos Aires has become 0.6°C (1.1°F) warmer on average: the 2010–2024 average against 1970–1989.
At least 1 mm of rain falls on 32% of December days.
Warmest: 2013 (32.4°C)Latest: 2023 (26.9°C)10-year averageLong-run average (28.4°C)
Look Up a Day in December
See the weather in Buenos Aires on any December date, year by year.
Source: NOAA GHCN-Daily, Buenos Aires Observ (1971–2025); Aeroparque Jorge Newbery (1973–2025). Averages cover 1971–2025. How we compute this