Buenos Aires Weather in August
Argentina · Humid Subtropical climate · Data averaged from 2020-01-01 to 2024-12-31 (5 years)
August in Buenos Aires sees average temperatures ranging from a low of 8.5°C (47.3°F) to a high of 15.8°C (60.4°F), with a mean of 12.0°C (53.6°F). Compared to the annual average of 17.6°C (63.7°F), this month is 5.6°C cooler than the yearly norm. Precipitation averages 59.0mm, making it approximately 16.0mm drier than the monthly average of 74.0mm. The city receives an average of 8.3 hours of sunshine per day during August, with relative humidity averaging 75.3%. Wind speeds reach an average maximum of 22.8 km/h. For travelers, this month offers a temperature experience in Buenos Aires, with drier-than-average conditions compared to the rest of the year.
If you're planning outdoor activities in Buenos Aires, the seasons are flipped but mild. I ran the Costanera Sur in January (summer): 30°C with 70% humidity, draining but the river breeze helped. March-April is the outdoor sweet spot: 22°C, manageable UV, empty paths. October-November is similarly ideal — jacarandas blooming, 20°C, perfect cycling weather. July (winter) brings 12°C and dampness; running is fine but mornings feel raw. UV peaks dangerously in January (11+); sun protection is mandatory between 10am-4pm. The wind off the Río de la Plata is constant and can be bracing in winter.
August vs Adjacent Months
| Metric | July | August | September |
|---|---|---|---|
| Mean Temp | 10.4°C (50.7°F) | 12.0°C (53.6°F) | 14.4°C (57.9°F) |
| Rainfall | 43.2mm | 59.0mm | 63.5mm |
| Sunshine | 7.9 hrs | 8.3 hrs | 9.0 hrs |
| Humidity | 78.8% | 75.3% | 74.4% |
| Wind | 21.8 km/h | 22.8 km/h | 24.3 km/h |
| Rainy Days | 8.6 | 9.2 | 9.6 |
Seasonal Context
August falls in Summer in the Northern Hemisphere. Summer brings the warmest conditions of the year with the longest daylight hours. For travelers visiting Buenos Aires in August, the data indicates mixed conditions based on the combination of temperature, precipitation, and daylight hours.
Frequently Asked Questions
What is the average temperature in Buenos Aires in August?
The average temperature in Buenos Aires during August ranges from 8.5°C (47.3°F) to 15.8°C (60.4°F), with a mean of 12.0°C (53.6°F).
How much does it rain in Buenos Aires in August?
Buenos Aires receives an average of 59.0mm of precipitation in August, spread across approximately 9.2 rainy days.
What should I pack for Buenos Aires in August?
Based on August weather data, pack warm layers, a medium jacket, and waterproof outerwear.
Is August a good time to visit Buenos Aires?
August is a cooler month, suitable for travelers who prefer mild weather and fewer crowds. Pack warm layers and enjoy indoor attractions.
Other Months for Buenos Aires
Cities with Similar August Climate (Humid Subtropical)
Data Source: Open-Meteo historical archive (2020-01-01 to 2024-12-31). Daily measurements aggregated into monthly climate normals. Coordinates: -34.61°, -58.38°. Timezone: America/Argentina/Buenos_Aires. Last updated: 2026-07-30.