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Live forecasts update automatically; written guidance last reviewed 20 June 2026 by the UK Bullet weather desk. Data from national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Buenos Aires has a humid subtropical climate with mild winters and hot, humid summers. The live forecast above shows current conditions, but the city experiences distinct seasonal shifts that make timing your visit key.
What is the weather like in Buenos Aires throughout the year?
Buenos Aires weather by month follows a clear pattern: summer (December–February) is hot and sticky, with highs often above 30°C; winter (June–August) is cool and damp, averaging 10–15°C. Spring and autumn are the most comfortable seasons.
- Summer (Dec–Feb): hot, humid – buenos aires weather december typically peaks around 30°C with frequent thunderstorms.
- Autumn (Mar–May): mild with sunny spells; temperatures drop gradually from 25°C to 18°C.
- Winter (Jun–Aug): cool, overcast – buenos aires weather in winter averages 12°C; occasional frost but no snow.
- Spring (Sep–Nov): warming up, blooming jacarandas; highs from 17°C to 25°C.
How do I read the temperature – Celsius or Fahrenheit?
Argentine forecasts use Celsius. The buenos aires weather in celsius figures are standard; for those accustomed to Fahrenheit, the buenos aires weather fahrenheit conversion is roughly 30°C = 86°F. The live forecast above displays Celsius.
Can I get a longer forecast for Buenos Aires?
Yes. For planning, look at buenos aires weather 14 days or weather in buenos aires 10 days – these are reliable for general trends. Some services also offer buenos aires weather 30 days, though accuracy decreases after two weeks.
Does Buenos Aires get very cold in winter?
Winter (June–August) is cool but not extreme. Average lows are around 8°C; temperatures rarely dip below freezing. Damp conditions can make it feel chillier, so a light jacket is advisable.
When is the rainy season in Buenos Aires?
Rainfall is fairly spread, but summer (December–March) sees the heaviest downpours, often as short, intense thunderstorms. February is typically the wettest month with around 130mm of rain.
Is Buenos Aires humid all year?
Humidity is highest in summer (70–80%), making the heat feel more oppressive. In winter humidity drops to around 60–70%. Spring and autumn are generally more comfortable for outdoor activities.
Sources
For UK comparisons, see our UK weather hub or check Birmingham Weather and Glasgow Weather. For longer-range planning, our 10 Day Weather Forecast UK page may be useful.