Buenos Aires weather in December
“Mild and bright — an underrated time to visit.”
Roughly 8 rainy days across the month, on average.
December in Buenos Aires is summer, bringing warm and humid conditions perfect for outdoor exploration. Expect average highs of 27.6°C (82°F) and lows of 19.3°C (66°F). The city receives about 81mm of rainfall spread across roughly 8 rainy days, so afternoon thunderstorms are common but usually brief. With 12.3 hours of daily sunshine, you'll have plenty of daylight to enjoy parks, neighborhoods, and waterfront areas.
This is peak summer season in Buenos Aires, with locals heading to beach towns and the city taking on a more relaxed vibe. December brings festive energy as Christmas approaches, with decorations lighting up Avenida Santa Fe and shopping districts. Expect moderate to high crowds, especially in the final weeks before Christmas and around the New Year period.
For travelers planning a 2026 visit, December offers vibrant nightlife, open-air dining, and cultural events. Pack light, breathable clothing and always carry a compact umbrella. Book accommodations and restaurants in advance, as this is peak season. The warm weather makes it ideal for exploring La Boca, Recoleta, and taking day trips to nearby estancias or Tigre Delta.
What to pack for Buenos Aires in December
December's heat and humidity call for lightweight, breathable clothing. Bring layers for air-conditioned venues and a rain jacket for sudden storms. Comfortable walking shoes are essential for exploring Buenos Aires' vibrant neighborhoods.
- Lightweight linen shirt
- Cotton shorts or linen pants
- Light rain jacket
- Canvas sneakers or walking sandals
- Wide-brimmed sun hat
What to pack for Buenos Aires in December
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Where to stay in Buenos Aires
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Compare hotels on Booking.com→Things worth doing
Explore La Boca's colorful streets, enjoy waterfront dining in Puerto Madero, visit Recoleta Cemetery and museums, take tango classes or evening shows, relax in Parque Centenario.
December vs. the rest of the year
How this month compares in Buenos Aires. Tap any month to read more.
highlighted months are among the best time to visit.
Best time to visit Buenos Aires
December is one of the best months to visit Buenos Aires — alongside January, February, November. Ten-year climate data confirms it: comfortable temperatures, manageable rainfall, and a healthy dose of sunshine.
See the full best-time-to-visit guide for Buenos AiresOther places with a similar climate right now
Buenos Aires in December — FAQ
Q01Is December a good time to visit Buenos Aires?
Is December a good time to visit Buenos Aires?
Yes — it is a good time to visit, with pleasant, comfortable weather. In December, Buenos Aires averages a high of 28°C (82°F) and a low of 19°C (67°F), with 81mm of rainfall across roughly 8 rainy days.
Q02What is the average temperature in Buenos Aires in December?
What is the average temperature in Buenos Aires in December?
The average high temperature in Buenos Aires during December is 28°C (82°F), with an average low of 19°C (67°F). These figures are averaged from ten years of daily records (2015–2024, Open-Meteo Archive).
Q03How many rainy days does Buenos Aires have in December?
How many rainy days does Buenos Aires have in December?
Buenos Aires averages approximately 8 rainy days in December, with a total monthly rainfall of about 81mm. This is based on daily precipitation records where days with 1mm or more of rain are counted as rainy days.
Q04What should I pack for Buenos Aires in December?
What should I pack for Buenos Aires in December?
For Buenos Aires in December, pack light, breathable clothing (cotton or linen), a compact umbrella or waterproof jacket, sunscreen and sunglasses, comfortable walking shoes. These recommendations are based on the ten-year weather averages for this specific month.
Q05How crowded is Buenos Aires in December?
How crowded is Buenos Aires in December?
Tourist crowds in Buenos Aires during December are typically moderate — winter is high season for tropical destinations. Consider this when planning accommodation — prices track crowd levels closely.