Climate Insights for Buenos Aires

The climate in Buenos Aires is warm and mild. The average annual temperature is 20°C and approximately 3880mm of precipitation falls per year. Buenos Aires receives a notable amount of rainfall throughout the year, including during its driest month. Buenos Aires sits near the equator, so seasonal temperature differences are minimal throughout the year.

Buenos Aires has relatively stable temperatures year-round, staying within a 10°C range. The warmest month is March, when average highs reach 25°C and the mean temperature sits around 20°C. January is the coolest month, with minimum temperatures around 15°C and an average of 19°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows.

Buenos Aires is a very wet location, receiving approximately 3880mm of precipitation annually, which averages out to around 323mm per month. The wettest month is October, averaging 722mm of rainfall. November and May also tend to see above-average precipitation. The driest month is February, with just 36mm. That's 686mm less than October, 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 February, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in May, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. Wind speeds vary significantly across the year, with a 1km/h difference between the calmest and windiest months. This level of variation is worth factoring into travel plans.

It is currently summer in Buenos Aires, which began on June 21, 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 March at around 25°C, while the coldest stretch bottoms out in January near 15°C. Autumn is next, beginning on September 23, 2026 — 91 days from now.

The best time to visit Buenos Aires is during January, February and March, when the weather is most comfortable for travellers. During these months, average temperatures hover around 20°C with modest rainfall averaging 54mm per month. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

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.