Buenos Aires
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and Climate
Buenos Aires, Argentina

The Congress Square monument in Buenos Aires, Argentina in spring
The Congress Square monument in Buenos Aires, Argentina in spring
The city of Buenos Aires has a humid subtropical climate classified under the Köppen climate classification as (CFA); a warm temperate climate characterized by hot and humid summers that are occasionally accompanied by thunderstorms and cold, relatively dry winters.

December, January, and February are the hottest months with temperatures ranging between 64.4°F (18°C) and 68°F (20°C) at its coldest, and between 82.4°F (28°C) and 86°F (30°C) at its hottest, marking the summer season.
Summer records the highest number of sunshine hours per day totaling to an average of nine and also is the rainiest of all the seasons with the rain gauge collecting an average of 4.5" (114.3mm).

Winter in Buenos Aires is cold and chilly, and its temperatures go as low as 44.6°F (7°C) on the coldest days and up to 59°F (15°C) on the warmest days.
The sun stills come through, but generally, it remains crisp and relatively dry through winter falling between June and August. Rainfall in winter can collect up to 2.3" (58.4mm).


Spring, in Buenos Aires, is the best time to visit the city - just in time for the blooming of the beautiful Jacaranda trees. This season is characterized by mild temperatures within the range of 60.1°F (15.6°C) and 80.1°F (26.7°C) and tolerable rainfall averaging 3.1" (78.7mm) to 5.5" (139.7mm).
This weather is the best time to indulge in outdoor activities and enjoy the breathtaking beauty of blooming flowers everywhere which make the city appear like a flower bed.

Winter might not be the best time to visit Buenos Aires owing to its low temperatures and wet atmosphere that could cause flu symptoms or worse. It is mostly only best to stay indoors and find activities to engage in as opposed to outdoors. The temperatures go to as low as 50°F (10°C) and make the worst time for people who love the warmth of spring and summer.

The temperatures are high in January and set a warm mood for the year. Ranging between 68°F (20°C) and 84.2°F (29°C) the temperature makes it a perfect time for a swim, as the sea temperature itself is measuring up to 73.4°F (23°C). The humidity measures 65%, high enough due to the high rainfall amount in January measuring up to 4.7" (119.4mm). Expect a few lightning flashes and thunderstorms common during this time. Weather in January »

In February, humidity rises to 69% triggering a drop in the rainfall to measure up to 4.9" (124.5mm) but maintains the rainfall days at nine.
The temperature is still friendly ranging between 66.2°F (19°C) and 77°F (25°C), warm enough for outdoor activities and indulging.
The sunshine hours average at approximately nine per day in February, and the sea is warming up to an average of 73.4°F (23°C), just like in January. Weather in February »

March is the transitional month between summer and autumn and is characterized by temperatures ranging between 64.4°F (18°C) and 80.2°F (26.8°C) making it another warm month of the year. Carry an umbrella since the rain will inevitably fall and is still high measuring 6.1" (154.9mm) and falling for an average of nine days in the month.
The locals love to engage in sunbathing activities because the sun is not as hot and the sea temperature is favorable at 71.6°F (22°C). Weather in March »

The temperatures in April are mildly warm and ranging between 59°F (15°C) and 72.1°F (22.3°C).
This is one of the best times to be in the city of Buenos Aires. The average humidity in this month is 77% warming the sea to measure 66.2°F (19°C), a dip from the previous months but still warm enough. Expect rain gauge readings to stand at 4.1" (104.1mm) but again falling for an average of nine days in the whole month. Weather in April »

May is a lovely time in Buenos Aires, but the temperatures are taking a dip to read between 51.8°F (11°C) and 66.2°F (19°C). This is the time to start pulling out the warm scarfs and sweaters in anticipation for the approaching cold season. With the dip in temperatures comes a drop in both the sea temperatures to read 60.8°F (16°C) and also the rainfall score which hits 3.5" (88.9mm) falling at an average of 8 days. The average sunshine hours even drop to 6 per day in May; it is getting cooler.
Take a walk in the lovely streets under the perfect tree shades with mild warmth and enjoy the beauty of the somber atmosphere. Weather in May »

June marks a transition into winter dropping its temperatures to between 46.4°F (8°C) and 61.7°F (16.5°C), not the coldest since the humidity in the atmosphere shoots to 80% resulting in a drop in the sea temperature to 55.4°F (13°C). It is getting a little gray by now, and clouds should be seen forming. The sun still shines but for only approximately 4 hours a day.
Rainfall also occurs, but the rain gage will collect 2" (50.8mm) for an average of nine days.
The lovers of the cold can now come out to watch and take in the beauty of winter's frost. Weather in June »

July has the lowest temperatures recorded in Buenos Aires ranging between 44.6°F (7°C) and 59°F (15°C) and is characterized by chilly mornings and evenings that are wet and accompanied by light rains that fetch only up to 2.2" (55.9mm) for an average of seven days across the month.
The sea temperatures are also bound to drop to 51.8°F (11°C) and so does the humidity that takes a slight dip to read 79%.
Snow is rare in Buenos Aires because sometimes winter temperatures fluctuate up to get warmer than usual. To avoid the cold, do as the locals do; dress warm and carry around an umbrella. Weather in July »

August is a warm winter month in Buenos Aires as it sees its temperature take a small rise to read between 48.2°F (9°C) and 62.6°F (17°C) - still cold enough to maintain the warmth but reasonably sufficient because the sunshine hours are now up to 6.
Rainfall is still part of the weather in August and will fall for averagely eight days to read 2.6 on the rain gauge meter. Humidity dropping to 75% is the most definite sign that it is about to start getting warmer, so hello spring!
Join the locals in the final winter festivals in anticipation for its closure. Weather in August »

Humidity in September drops further to 70% and as such the temperatures get warmer rising to read between 50°F (10°C) and 66.2°F (19°C) as does the sea temperature that now reads 51.8°F (11°C). Enjoy more sunshine hours than average 6 across the day and take advantage to walk in the sun as it is mildly warm and not so hot. Expect more outdoor activities to come to birth already but don't be scared of the rain as it will not interfere with the warmth in the atmosphere. It might fall for about seven days only across the month hence collecting at an average of 3.1" (78.7mm) and will keep going up in the next few weeks. Weather in September »

With temperatures ranging between 55.4°F (13°C) and 73.4°F (23°C), October in Buenos Aires gets warmer now and more crowds start to flock the streets of Buenos Aires to partake of the warmth of the sun that will shine for up to 7 hours a day. Humidity drops further to 69% characterizing October with warm daytimes and mildly chilly mornings and evenings. The sea temperature gets warmer at 57.2°F (14°C) even with the rain that falls evenly across the month to fetch 5.5" (139.7mm).
Expect crowds on the beaches and join in for the sun baths and basking. Weather in October »

In November the nights are cold and the days warm with temperatures between 60.8°F (16°C) and 77°F (25°C).
It is a good time for a swim in the beach and basks in the 8-hour long sunshine across the day. This heat does not stop the rain falling to collect at 5.1" (129.5mm) for averagely ten days in the month. Weather in November »

December in Buenos Aires is hot and humid and full of crowds in the sun. The temperatures are high, ranging between 64.4°F (18°C) and 82.4°F (28°C) in this transitional month. The rain gauge collects around 4.1" (104.1mm) as the rainy days are now down to 9.
December is the beginning of the summer - enjoy swimming in the pleasant and warm waters that have heated up to 69.8°F (21°C) due to lower humidity of 64%. Weather in December »