Buenos Aires Weather in August
What's the weather like in Buenos Aires (Copán) in August 2025?
The climate in Buenos Aires during August can be summarized as hot, humid and very wet.
August is in the summer in Buenos Aires and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 19°C (66°F) is normal.
| Daytime temperature | 27.9°C 82.2°F |
|---|---|
| Nightly temperature | 18.9°C 66°F |
| Average temperature | 23.4°C 74.1°F |
| Daily sunshine | 6.5 hrs |
| Avg rainfall | 248 mm 9.8 ins |
| Rainy days | 22 days |
| Sea temperature | 29.5°C 85°F |
| Humidity | 84% |
| Windspeed | 16.9kph 11 mph |
On average August is the 4th wettest month of the year in Buenos Aires with around 248mm 9.8 inches of rain making it a very wet time to visit. This rainfall is typically spread over 22 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.5 hours of sunshine per day.
August temperatures in Buenos Aires
August rainfall
August hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Buenos Aires in August 2025.
Other monthly averages
Best places to visit in August
Buenos Aires weather stats
| Hottest month: | May | 29.4°C 84.9°F |
|---|---|---|
| Driest month: | March | 36mm 1.4ins |
| Sunniest month: | April | 8.1hrs |
| Coldest month: | January | 23.6°C 74.5°F |
| Wettest month: | June | 321mm 12.6ins |
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