Weather in Buenos Aires: Climate, Seasons, and Average Monthly Temperature

jacaranda trees in Puerto Madero

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Buenos Aires generally enjoys good weather year-round, making it a prime tourist destination. It has a humid subtropical climate, characterized by hot, humid summers with thunderstorms and cold, relatively dry winters. Thanks to its proximity to the Rio de la Plata, it has moderate temperatures most of the year.

Spring and fall are the best seasons to visit weather-wise, with balmy temperatures, plenty of sunshine, and plants exploding with colors in all barrios (neighborhoods) of the city. In the spring, high temperatures range from 66 degrees Fahrenheit (19 degrees Celsius) to 77 degrees Fahrenheit (25 degrees Celsius). In the fall, highs range from 62 degrees Fahrenheit (19 degrees Celsius) to 80 degrees Fahrenheit (27 degrees Celsius). These seasons also have reasonably priced rates for hotels.

Summer is the peak tourist season and has higher hotel rates. Showers are frequent due to moist, easterly winds blowing in from the north of Argentina. While the humidity level lowers slightly, it combines with the heat, making days feel muggy. Winter is low tourist season, and enjoys lower humidity than the fall, thanks in part to strong southerly winds beginning to blow through the city.

Fast Climate Facts

  • Hottest Month: January (84 degrees Fahrenheit / 29 degrees Celsius)
  • Coldest Month: July (59 degrees Fahrenheit / 15 degrees Celsius)
  • Wettest Month: March (6.8 inches)

Summer in Buenos Aires

During hot, wet Buenos Aires summers, most porteños (Buenos Aires residents) leave their beloved city for the waters of Mar de Plata or Brazil’s Florianopolis. Most locals leave the city, but the international tourists come in droves for winter break in the Northern Hemisphere. If you come during this time, book a room with air conditioning as the humidity is crushingly present. Hotel rates begin to get pricier in December and stay higher than average throughout the summer season. Expect the most amount of daylight hours (sometimes as many as 14 hours) and power cuts throughout the city from people blasting air conditioners all day. Summer is the rainiest season in Buenos Aires, so expect showers with your sunshine. While nights do cool off considerably during the summer, it won’t hurt to do like the locals and chug lemonade or buy a big cone of ice cream.

What to pack: Tank tops, shorts, or any light, reflective clothing. Flip flops, sunglasses, sunscreen, and a water bottle will be essential, especially if you plan on walking around different neighborhoods or touring classic outdoor sites like Plaza de Mayo. Take an umbrella, raincoat, and waterproof shoes, as well.

Average Temperatures by Month:

December: 82 degrees F / 64 degrees F (28 degrees C / 18 degrees C)

January: 84 degrees F / 68 degrees F (29 degrees C / 20 degrees C)

February: 77 degrees F / 66 degrees F (25 degrees C / 19 degrees C)

Fall in Buenos Aires

Fall is an excellent time to visit Buenos Aires, especially in April and May. The temperatures start to cool considerably in March and continue to drop throughout the season, hovering between the low 70s and high 50s Fahrenheit. March is the rainiest month of the year, receiving 6.78 inches of rain, but rainfall decreases to 4.36 inches by April and continues falling through the winter. Even though the humidity increases slightly, the air feels far more pleasant and less muggy than in summer. The lower temperatures and colorful leaves make fall an ideal time for outdoor walks. For a neighborhood with pleasant walks of brilliantly hued trees, head to Barracas.

What to pack: A raincoat, umbrella, and waterproof shoes for the rainy days. Some shorts, pants, T-shirts, and a light jacket or hoodie. If you go later in the season, bring more clothes to layer. If you want to blend in with the locals, pack mostly black clothes.

Average Temperatures by Month:

March: 80 degrees F / 64 degrees F (27 degrees C / 18 degrees C)

April: 72 degrees F / 59 degrees F (22 degrees C / 15 degrees C)

May: 62 degrees F / 52 degrees F (19 degrees C / 11 degrees C)

Winter in Buenos Aires

Winters in Buenos Aires are cold, but not cold enough for snow. It’s low tourist season, but the city will still be active, despite the chilly weather. Though winter is the driest season, it still rains and sunshine hours decrease to just about five hours per day (though there are still 10 to 11 hours of daylight). Humidity reaches nearly 80 percent, making the cold feel that much more biting, but a warm coat and hat will make ventures outside bearable.

Due to ski season in the south of the country, there’s a slight rise in tourism in the winter from North American tourists making their way down to the Patagonian slopes. However, the Buenos Aires Tango Festival is another big attraction in the country. There are performances, concerts, and classes to learn Argentina’s most famous dance.

What to pack: Bring a warm coat, scarf, hat, and socks. Gloves are recommended but not essential. A good pair of jeans and a flannel will be perfect for early winter. Take a raincoat or umbrella as well, and your tango shoes for the festival.

Average Temperatures by Month:

June: 62 degrees F / 47 degrees F (17 degrees C / 8 degrees C)

July: 59 degrees F / 45 degrees F (15 degrees C / 7 degrees C)

August: 63 degrees F / 48 degrees F (17 degrees C / 9 degrees C)

Spring in Buenos Aires

Spring is one of the best times to visit in Buenos Aires. After months of cold and gray skies, temps began rising to the 60s and 70s Fahrenheit. Daylight hours increase to nearly 12 in early spring and 14 by the end of November. Porteños gather in parks, sip mate (a highly-caffeinated tea), and enjoy the masses of flowers blooming throughout the city. The jacaranda trees’ neon violet boughs hang over the streets, and the humidity decreases to its lowest levels of the year.

Plus, hotels offer reasonable room rates until December, and one of the city’s most exciting nights, La Noche de Los Museos (the Night of the Museums), happens the first week of November. During the days, enjoy the beautiful and varied parks of the city, like the Botanical Garden or Rosedal.

What to pack: Bring shorts and T-shirts, as well as jeans and a hoodie. Nights can still be cool, so if you get cold easily, pack a warm jacket. Take your sunglasses and a water bottle, especially if you plan on picnicking or park-hopping.

Average Temperatures by Month:

 September: 66 degrees F / 50 degrees F (19 degrees C / 10 degrees C)

October: 73 degrees F / 55 degrees F (23 degrees C / 13 degrees C)

November: 77 degrees F / 61 degrees F (25 degrees C / 16 degrees C)

Average Monthly Temperature, Rainfall, and Daylight Hours
Month Avg. Temp. Rainfall Daylight Hours
January 84 F 6.6 inches 14 hours
February 84 F 6.7 inches 13 hours
March 80 F 6.8 inches 12 hours
April 72 F 4.4 inches 11 hours
May 62 F 2.9 inches 10 hours
June 62 F 2.2 inches 10 hours
July 59 F 2.8 inches 10 hours
August 63 F 2.8 inches 11 hours
September 66 F 3.0 inches 12 hours
October 73 F 4.9 inches 13 hours
November 77 F 4.5 inches 14 hours
December 82 F 4.0 inches 14 hours
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