Buenos Aires Weather in August
In August, Buenos Aires averages a high of 18°C (64°F) and a low of 9°C (48°F), from 52 years of daily records (1971–2025).
18°C
Average high
64°F
9°C
Average low
48°F
34°C
Record high
93°F · August 24, 1996
-2°C
Record low
28°F · August 1, 1991
What August Is Like in Buenos Aires
- The coldest August reading, -2°C (28°F) on August 1, 1991, has not been matched in 34 years.
- August is the least predictable month in Buenos Aires: daytime highs vary more from day to day and year to year than in any other month.
- August in Buenos Aires has become 0.6°C (1.0°F) warmer on average: the 2010–2024 average against 1970–1989.
- The warmest August in the record was 1990; the coldest was 2011.
At least 1 mm of rain falls on 26% of August days.
Warmest: 1990 (20.9°C)Latest: 2024 (16.4°C)10-year averageLong-run average (17.6°C)
Look Up a Day in August
See the weather in Buenos Aires on any August 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