Buenos Aires Weather in August

August in Buenos Aires brings moderate temperatures, with highs of 18°C (64°F) and nights dropping to 7°C (45°F). Rainfall is on the higher side this month, averaging around 65 mm (2.6 in), so keep a rain jacket handy.

Rainfall in Buenos Aires in August

Typically, you can expect about 7 days of rain this month, with 65 mm (2.6 in) on average. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.

Temperature in Buenos Aires in August

Temperatures in Buenos Aires in August top out at 18°C (64°F) and drop to 7°C (45°F) overnight. August is part of the winter season. Conditions are often most pleasant around the middle of the day. Nights drop to 7°C (45°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.

Sunshine in Buenos Aires in August

The area experiences a moderate amount of sunshine, with approximately 177 hours of sunlight expected. This means a decent mix of sun and overcast.

Wind Speed in Buenos Aires in August

August has wind speeds averaging 3 m/s (6 knots). You can expect comfortable light winds that steadily move flags and feel mild throughout the day. Since this is an average, daily conditions vary from gentle winds to more active breezes.

Average water temperature in August

With water temperatures around 10°C (50°F), swimming isn't really an option for most visitors. The cold sets in quickly and a wetsuit won't fully solve it.

If your ideal day consists of dry skies and pleasant temperatures, March, April, May, September, November and December typically offer the best circumstances for Buenos Aires.

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For a detailed overview over the year and the best time to visit Argentina, check out our Buenos Aires's climate page.

Buenos Aires Temperature in August

Min Temperature 7°C (45°F)  

Max Temperature 18°C (64°F)  

Water Temperature 10°C (50°F)  

Chance of Rain 24%  

Precipitation 65 mm (2.6 in)  

Rainy days 7 days  

Humidity 74%  

Windspeed 3 m/s (6 knots)  

Sunshine 177 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Buenos Aires typically stay consistent throughout August, with daily highs averaging around 18°C (64°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 8°C (46°F).

Average temperatures in August

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in August

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Historical weather for Buenos Aires in August

Browse day-by-day weather records for Buenos Aires spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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Buenos Aires historical weather extremes in August

Based on weather observations in Buenos Aires between 1976 and 2025, these are the recorded extremes during August.

• On August 29, 2009, temperatures climbed to 34°C (93°F), marking the warmest August day on record.
• On August 1, 1991, Buenos Aires saw its coldest August day with temperatures maxing out at 7°C (45°F).
• The coldest night in August in Buenos Aires was on August 2, 1991, with a minimum of -4°C (25°F).

What to Wear in Buenos Aires in August

For Buenos Aires in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. The water temperature sits at about 10°C (50°F), which is too chilly for most people to enjoy swimming. Leave the swimsuit at home unless you love cold water. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Buenos Aires in August

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

6/10

Cycling

6/10

Walking

6/10

Barbeque

6/10

Camping

4/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Argentina, check out our Buenos Aires's climate page.

More climate data for Buenos Aires

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Buenos Aires climate overview or explore weather in Argentina.