Current Weather and Forecast in Buenos Aires, Argentina
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About the weather in Buenos Aires
Buenos Aires has a humid subtropical climate. January is the warmest month, with average highs of 83°, and July the coldest, when nights fall to around 46°. March brings the most rain, on about 8 days, while December is the sunniest, with 12.4 hours of sunshine a day. Over a whole year it rains on roughly 91 days.
Buenos Aires climate guide: monthly averages, seasons and the best time to visit
Common questions
What is the hottest month in Buenos Aires?
January, averaging 83°F (28°C) by day and 69°F (21°C) overnight. The hottest single day in our 2015-2024 record for this location reached 102°F (39°C).
When does it rain most in Buenos Aires?
March, at 4.7 inches (118 mm) over about 8 days. June is the driest month, at 1.9 inches (50 mm).
When should I visit Buenos Aires?
The best time to visit Buenos Aires is generally August to September and February, when warm days, manageable rainfall and plenty of daylight line up. Daytime temperatures in that window sit near 70°F (21°C), with rain on about 7 days a month. For the same question asked the other way round, see where else is warm in August.
How much do temperatures drop at night in Buenos Aires?
By about 7°C on an average day - a narrower day-to-night gap than most of the 3496 cities we track. In January that means 83°F (28°C) down to 69°F (21°C).
Is there snow in Buenos Aires?
Effectively no. The 2015-2024 record for Buenos Aires shows no regular measurable snowfall.
When is Buenos Aires at its coldest?
July, with highs of 57°F (14°C) and lows near 46°F (8°C). The coldest day in the 2015-2024 record fell to 29°F (-1°C).
Is Buenos Aires humid?
Relative humidity averages 73% across the year, which reads as fairly humid. Paired with January heat, muggy afternoons are routine.
What is the average temperature in Buenos Aires?
64°F (18°C) across all twelve months - about 70°F (21°C) by day and 58°F (14°C) after dark.