Weather in Buenos Aires in August 2025
Average weather
Average temperature in Buenos Aires in August
The temperature in August is +16°C on average, with a range between a maximum of +25°C during the day and a minimum of +4°C at night.
The average maximum temperature goes down 33% by the end of the month, compared with the beginning of the month, from +23°C to +16°C.
Is Buenos Aires warm or cold in August?
Buenos Aires is typically mild in August.
Maximum temperatures go up compared to the previous month from +14°C to +16°C. The minimum temperature also goes up from +8°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
August is one of the coolest months in Buenos Aires, here is the comparison with other months:
Water temperature in Buenos Aires in August
Water in Buenos Aires in August is Cold. It varies from +11°C to +14°C, with an average of +12°C. This is almost similar to the air temperature, which averages +16°C.
The water temperature in August is one of the coldest of the entire year:
Can you swim in Buenos Aires in August?
Travel to Buenos Aires
Climate in Buenos Aires in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +14°C | +16°C | +18°C | ||||
| Min. temperature | ||||||
| -2°C | -1°C | 0°C | ||||
| Max. temperature | ||||||
| +31°C | +32°C | +31°C | ||||
| Rainfall | ||||||
| 51 mm | 58 mm | 69 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Avg. water temperature | ||||||
| +12°C | +12°C | +14°C | ||||
| Humidity | ||||||
| 76% | 74% | 72% | ||||
| Air pressure | ||||||
| 1018 HPa | 1018 HPa | 1017 HPa | ||||
| Sunny days | ||||||
| 11 | 12 | 11 | ||||
| Cloudy days | ||||||
| 12 | 10 | 9 | ||||
| Rainy days | ||||||
| 7 | 7 | 8 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August often has better weather than July. It’s getting warmer as August arrives. The average maximum temperature goes up from +14°C to +16°C during the day. Prepare for more rain. Average rainfall goes from 51 mm to 58 mm. It feels drier, as humidity decreases from 76% to 74%. The average wind speed doesn’t change much during August, staying around 3 m/s. The good news is there are likely to be more sunny days in August, from 11 to 12.
September brings much the same weather, it remains good.
Wind
The average wind speed is 5 m/s getting up to 11 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Buenos Aires is gradually increasing during August, going from 2 m/s to 3 m/s over the course of the month.
Rain
How was the weather last August in Buenos Aires?
Climate Change over Years
The climate in Buenos Aires in August has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+20°C) and the highest in 2017 (+22°C). The driest year was 2008 with only 468 mm of rainfall, and the wettest year was 2014 with 1388 mm.
FAQ
Is August a good time to visit Buenos Aires?
Can you sunbathe in Buenos Aires in August?
Can you swim in Buenos Aires in August?
Is Buenos Aires rainy in August?
Is it sunny in Buenos Aires in August?
How much does it cost to fly to Buenos Aires in August?
Monthly weather in Buenos Aires
Source of the data
For this page, we’ve looked at the typical weather in Buenos Aires, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.