Buenos Aires, Argentina Climate & Monthly Averages
The climate of Buenos Aires
Buenos Aires has a humid subtropical climate, marked by hot, humid summers and generally mild winters. Average daytime highs range from about 57°F (14°C) in July to around 83°F (28°C) in January, and the city records roughly 91 days of measurable precipitation a year.
Climate quick facts
- Hottest month: January - highs near 83°F (28°C)
- Coldest month: July - highs near 57°F (14°C)
- Record high: 102°F (39°C) · Record low: 29°F (-1°C) (2015–2024)
- Wettest month: March (8 rainy days) · Sunniest: December (12.4 h sun/day)
- Climate type: humid subtropical - hot, humid summers and generally mild winters
Temperatures through the year
The warmest stretch of the year centers on January. Highs average 83°F (28°C) and overnight lows stay near 69°F (21°C). The coolest month is July, with typical highs of 57°F (14°C) and lows around 46°F (8°C). Based on 2015–2024 weather data, temperatures have reached as high as 102°F (39°C) and dropped as low as 29°F (-1°C).
Rain, sun and snow
March is usually the wettest month. It brings about 4.7 inches (118 mm) of rain over 8 days, while June is the driest. December brings the most sunshine, averaging 12.4 hours of sun a day.
Monthly climate table
| Month | High | Low | Rain days | Precipitation | Sunshine | Humidity |
|---|---|---|---|---|---|---|
| January | 83° | 69° | 9 | 3.2 in | 12.0 h/day | 67% |
| February | 82° | 68° | 7 | 3.0 in | 11.4 h/day | 69% |
| March | 77° | 65° | 8 | 4.7 in | 10.5 h/day | 73% |
| April | 71° | 60° | 8 | 4.2 in | 8.5 h/day | 76% |
| May | 63° | 52° | 6 | 2.9 in | 7.6 h/day | 79% |
| June | 59° | 47° | 7 | 1.9 in | 7.5 h/day | 80% |
| July | 57° | 46° | 8 | 2.9 in | 7.5 h/day | 80% |
| August | 61° | 48° | 6 | 2.4 in | 8.1 h/day | 77% |
| September | 64° | 51° | 6 | 2.7 in | 9.0 h/day | 74% |
| October | 69° | 55° | 9 | 3.3 in | 10.1 h/day | 71% |
| November | 76° | 62° | 8 | 3.4 in | 11.5 h/day | 67% |
| December | 81° | 66° | 8 | 3.3 in | 12.4 h/day | 64% |
Buenos Aires month by month
Buenos Aires weather in January
January brings highs around 83°F (28°C), lows near 69°F (21°C), about 9 wet days - typically the hottest month of the year in Buenos Aires.
Buenos Aires weather in February
February brings highs around 82°F (28°C), lows near 68°F (20°C), about 7 wet days.
Buenos Aires weather in March
March brings highs around 77°F (25°C), lows near 65°F (18°C), about 8 wet days - typically the wettest month of the year in Buenos Aires.
Buenos Aires weather in April
April brings highs around 71°F (22°C), lows near 60°F (15°C), about 8 wet days.
Buenos Aires weather in May
May brings highs around 63°F (17°C), lows near 52°F (11°C), about 6 wet days.
Buenos Aires weather in June
June brings highs around 59°F (15°C), lows near 47°F (8°C), about 7 wet days - typically the driest month of the year in Buenos Aires.
Buenos Aires weather in July
July brings highs around 57°F (14°C), lows near 46°F (8°C), about 8 wet days - typically the coldest month of the year in Buenos Aires.
Buenos Aires weather in August
August brings highs around 61°F (16°C), lows near 48°F (9°C), about 6 wet days.
Buenos Aires weather in September
September brings highs around 64°F (18°C), lows near 51°F (11°C), about 6 wet days.
Buenos Aires weather in October
October brings highs around 69°F (21°C), lows near 55°F (13°C), about 9 wet days.
Buenos Aires weather in November
November brings highs around 76°F (24°C), lows near 62°F (16°C), about 8 wet days.
Buenos Aires weather in December
December brings highs around 81°F (27°C), lows near 66°F (19°C), about 8 wet days - typically the sunniest month of the year in Buenos Aires.
Seasons in Buenos Aires
Spring (September through November)
Spring in Buenos Aires is mild and warm, with daytime highs averaging 70°F (21°C) and nights around 56°F (13°C); expect showers on roughly 23 days across the season.
Summer (December through February)
Summer in Buenos Aires runs hot, with daytime highs averaging 82°F (28°C) and nights around 68°F (20°C); expect showers on roughly 23 days across the season.
Fall (March through May)
Fall in Buenos Aires brings comfortable warmth, with daytime highs averaging 70°F (21°C) and nights around 59°F (15°C); expect showers on roughly 23 days across the season.
Winter (June through August)
Winter in Buenos Aires is crisp but comfortable, with daytime highs averaging 59°F (15°C) and nights around 47°F (8°C); expect showers on roughly 22 days across the season.
Climate questions, answered
What is the average temperature in Buenos Aires?
Is Buenos Aires hot in summer?
Is Buenos Aires cold in winter?
How many rainy days does Buenos Aires get in a year?
Best time to 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 typically sit near 70°F (21°C).
Pack for Buenos Aires with a warm jacket and layers for the cooler season; a compact umbrella or rain shell - showers are a regular feature. Evenings can feel noticeably cooler than afternoons - January nights average 69°F (21°C).
Buenos Aires temperature records (2015-2024)
Derived from ERA5 reanalysis data, 2015–2024. Official station records may differ.