Climate Insights for Buenos Aires

The climate in Buenos Aires is warm and mild. The average annual temperature is 22°C and approximately 1272mm of precipitation falls per year. March is the wettest month, receiving around 464mm of rainfall. Buenos Aires sits near the equator, so seasonal temperature differences are minimal throughout the year.

Buenos Aires sees moderate temperature variation throughout the year, ranging from 14°C to 29°C. The warmest month is January, when average highs reach 29°C and the mean temperature sits around 23°C. August is the coolest month, with minimum temperatures around 14°C and an average of 19°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs.

Buenos Aires is a fairly wet location, receiving approximately 1272mm of precipitation annually, which averages out to around 106mm per month. The wettest month is March, averaging 464mm of rainfall. February and April also tend to see above-average precipitation. The driest month is July, with just 6mm. That's 458mm less than March, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Buenos Aires is relatively calm, with an average annual wind speed of 1km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is September, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in March, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently autumn in Buenos Aires, which began on March 20, 2026. Buenos Aires sits near the equator, so the traditional four-season cycle is less pronounced — temperatures remain relatively stable year-round. The warmest period peaks in January at around 29°C, while the coldest stretch bottoms out in August near 14°C. Winter is next, beginning on June 21, 2026 — 3 days from now.

The best time to visit Buenos Aires is during May, June, July, August, September, October and November, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 23mm per month. By contrast, January can be uncomfortably hot with temperatures reaching 29°C. With minimal rainfall expected, you can pack light and plan outdoor activities with confidence.

The table below shows monthly climate averages for Buenos Aires based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.