Climate Overview
The climate in Buenos Aires is warm and mild. The average annual temperature is 19°C and approximately 3214mm 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.
Temperature
Buenos Aires has relatively stable temperatures year-round, staying within a 8°C range. May is the warmest month, though highs remain moderate at 23°C with a mean of 19°C. August 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.
Precipitation
Buenos Aires is a very wet location, receiving approximately 3214mm of precipitation annually, which averages out to around 268mm per month. The wettest month is April, averaging 343mm of rainfall. November and March also tend to see above-average precipitation. The driest month is August, with just 173mm. That's 170mm less than April, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around.
Wind
Buenos Aires is relatively calm, with an average annual wind speed of 7km/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 8km/h, though still comfortable for most outdoor activities. The calmest conditions occur in April, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
89 days until Summer
It is currently spring 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 May at around 23°C, while the coldest stretch bottoms out in August near 15°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 16 to 23°C. Rainfall is heavy, totalling around 971mm across the season with a monthly average of 324mm. Winds are generally light, averaging 7km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 15 to 23°C. Rainfall is heavy, totalling around 641mm across the season with a monthly average of 214mm. Winds are generally light, averaging 7km/h. Comfortable clothing with a light layer for cooler evenings is all you need.
Autumn
Temperatures range from 15 to 23°C. Rainfall is heavy, totalling around 848mm across the season with a monthly average of 283mm. Winds are generally light, averaging 7km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 15 to 23°C. Rainfall is heavy, totalling around 753mm across the season with a monthly average of 251mm. Winds are generally light, averaging 7km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
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.
