December in Buenos Aires means one thing above all else: summer has arrived, and the city feels it. Daytime temperatures sit around 28°C (82°F) with lows near 19°C (67°F), and the daylight stretches past 8:30 PM — which completely reshapes how the city operates. Dinner reservations drift to 10 PM. Parks fill up after 6 PM. The Costanera Sur gets packed on weekends. It's the start of the Argentine summer holiday season, and by mid-month you can feel the collective exhale as school lets out and porteños begin plotting their escapes to Mar del Plata or the sierras.
That said, December is still mostly a working month here — the real exodus happens in January. So you get the warmth and the long evenings without the ghost-town effect that hits certain neighborhoods in deep summer. The trade-off is that Christmas week brings genuine chaos: shops are packed, transit gets crowded, and some restaurants close from December 24 through the 26th. The humidity is noticeable but not punishing at around 63%, and afternoon thunderstorms roll through roughly seven times over the month — short, dramatic downpours that clear the air and pass within an hour.
For visitors, December sits in a sweet spot if you time it right. The first three weeks give you warm weather, open attractions, and a city still running at full speed. The last week flips to holiday mode — half the city is at family asados, firework stands appear on every corner, and the atmosphere shifts from cosmopolitan metropolis to something more intimate and familial. Both versions of Buenos Aires are worth experiencing, but they're different trips.
Why visit in December
- Long summer evenings with sunset past 8:30 PM transform the city — outdoor dining, park culture, and evening strolls along Puerto Madero feel completely different than in winter months
- The city is still fully operational through mid-December, unlike January when many restaurants, shops, and cultural venues close for summer holidays
- Warm enough for day trips to the Tigre Delta or the Costanera riverfront without the oppressive heat that January and February can bring
- Jacaranda trees are still finishing their bloom in early December, lining streets in Palermo and Belgrano with purple canopy
- End-of-year energy brings free outdoor concerts, milongas in parks, and neighborhood celebrations that you won't find in quieter months
Worth knowing
- Holiday-season pricing kicks in hard — flights and hotels spike 30-50% above shoulder season rates, the last two weeks
- Afternoon thunderstorms can derail outdoor plans with little warning, though they rarely last more than an hour
- Christmas week (roughly December 23-26) sees widespread closures of restaurants, museums, and shops — planning around this takes effort
- The combination of heat and humidity on the hottest days can push the feels-like temperature above 35°C (95°F), which makes midday walking tours uncomfortable
Best for
Think twice if
Early summer weather that's warm and generally pleasant, though the humidity adds a layer the thermometer doesn't capture. Mornings start mild around 19°C (67°F) and climb to around 28°C (82°F) by early afternoon. The humidity hovers at 63%, which means the shade feels fine but direct sun at midday has real weight to it. Expect about seven days of rain through the month — typically afternoon or evening thunderstorms that arrive fast, dump hard, and clear within 30 to 60 minutes. The rest of the time, skies tend to be partly cloudy with long stretches of sunshine. Evenings cool down just enough to make outdoor dining comfortable, with a breeze off the Río de la Plata.
Seasonal caution
- Sudden afternoon thunderstorms can produce intense lightning — avoid open parks and the Costanera riverfront when you see dark clouds building to the west
- Occasional heat spikes can push temperatures to 35°C (95°F) or above for a day or two, with humidity making it feel closer to 40°C — stay hydrated and avoid prolonged midday sun exposure on these days
Year-round climate
Averages from the last 5 years.
| Month | Avg high (°C) | Avg low (°C) | Rainfall (mm) |
|---|---|---|---|
| Jan | 29 | 21 | 69 |
| Feb | 28 | 20 | 100 |
| Mar | 26 | 19 | 191 |
| Apr | 21 | 15 | 100 |
| May | 17 | 10 | 84 |
| Jun | 15 | 8 | 27 |
| Jul | 14 | 8 | 42 |
| Aug | 16 | 9 | 77 |
| Sep | 19 | 11 | 69 |
| Oct | 22 | 14 | 63 |
| Nov | 25 | 17 | 105 |
| Dec | 28 | 19 | 67 |
Headline events
Nochebuena and New Year's Eve Celebrations
December 24-25 and December 31
Buenos Aires takes Christmas Eve (Nochebuena) and New Year's Eve seriously in a way that's distinct from most cities. Nochebuena is the main event — families gather for massive asados that start at 10 PM and run past midnight, when the sky erupts with fireworks from every neighborhood simultaneously. You can watch from any rooftop or high point and see the entire city light up. New Year's Eve follows the same pattern but with more public gatherings — Puerto Madero and the Obelisco area draw large crowds. The atmosphere is warm, chaotic, and communal in a way that cold-climate Christmas celebrations simply aren't.
Best things to do in December
Evening milongas in outdoor settings
cultureDecember's warm evenings move tango out of stuffy salons and into open-air spaces. The Glorieta de Belgrano in Barrancas de Belgrano park hosts free outdoor milongas where dancers of all levels gather as the sun sets. La Viruta and other established milongas also tend to open their terraces or host special summer-edition events. Dancing under the trees with the temperature sitting at a comfortable 22°C is a completely different experience from winter tango.
Warm evenings make outdoor milongas possible — these only run from November through March, and December has the best combination of warm weather and a city still full of dancers before the January exodusBooking tipOutdoor milongas at Barrancas de Belgrano are free and drop-in. For indoor venues with summer terraces, arrive before 11 PM on weekends to get a table.
Tigre Delta day trip by boat
day tripThe Tigre Delta — a network of rivers, islands, and stilted houses about an hour north of the city — is at its lush summer peak in December. The trees are fully leafed, the water is warm enough to dip your feet in, and the river breeze takes the edge off the heat. Take the Tren de la Costa or the regular Mitre line to Tigre, then hop a lanchas colectivas (public river boat) to explore the islands. Pack a picnic or eat at one of the island restaurants accessible only by water.
The delta is green and full in summer, river restaurants and recreation clubs are all open, and the heat makes being on the water far more appealing than pounding city pavement at middayBooking tipNo booking needed for public lanchas. For private boat tours, book a day or two ahead on weekends.
Costanera Sur Ecological Reserve at golden hour
natureThis 350-hectare nature reserve sits right next to Puerto Madero — a wild pocket of grasslands, lagoons, and walking trails minutes from the financial district. In December, the late sunset means you can arrive at 6 PM and walk the trails in beautiful golden light until nearly 9 PM. Bird activity peaks in the cooler evening hours, and you might spot coipo (nutria), herons, and southern screamers. The contrast between the glass towers behind you and the marshland ahead is surreal.
Extended daylight hours mean evening visits are viable and comfortable, bird activity is high in breeding season, and the reserve's grasslands are fully greenBooking tipFree entry, no booking needed. Bring mosquito repellent — the lagoon areas get buggy at dusk.
Rooftop bars and terrazas across Palermo
nightlifeBuenos Aires rooftop bar culture wakes up in December. Spots across Palermo Soho and Palermo Hollywood open their terraces for the season, and the combination of warm nights, late sunsets, and a city that doesn't eat dinner until 10 PM means you can settle into a rooftop at 8 PM and watch the sky change colors for an hour before the evening really begins. The scene is social rather than exclusive — these aren't bottle-service clubs, they're places where locals go to catch the breeze.
Most rooftop bars and terraces are seasonal, opening in late November or December and closing by March — this is the start of their season when everything is fresh and the staff is energizedBooking tipThursday through Saturday nights fill up by 9:30 PM. Arrive early or check if the venue takes reservations on social media.
San Telmo Sunday market in summer mode
marketsThe Feria de San Telmo runs every Sunday along Defensa street, and in December it operates in full summer mode — extended hours, more vendors, and street performers who take advantage of the warm weather to put on longer shows. The antique stalls, leather goods, and local art are the same year-round, but the atmosphere changes completely when the weather allows you to linger rather than rushing between covered sections.
Summer weather means the outdoor sections of the market are comfortable for browsing, street performers are out in force, and the surrounding cafés spill onto sidewalks creating an all-day social sceneBooking tipArrive before 11 AM to browse before the crowds peak. The southern end of Defensa near Parque Lezama is always less packed.
Catch a River Plate or Boca Juniors summer match
sportsThe Argentine football calendar overlaps with December — the Liga Profesional season is typically in its closing stages or playoff rounds, which means high-stakes matches with charged atmospheres. Attending a match at La Bombonera (Boca Juniors) or the Monumental (River Plate) in December means warm weather, no need for winter layers, and a crowd that's in full summer-energy mode. The experience is raw and loud in a way that European football rarely matches.
End-of-season matches in December often carry title implications, raising the intensity — and warm weather makes the stadium experience far more comfortable than winter fixturesBooking tipTickets for Boca and River sell out fast, for rivalry matches. Buy through the official club channels or a registered tourism operator — avoid street scalpers.
Palermo parks and Rosedal garden walks
natureThe Rosedal (Rose Garden) in Bosques de Palermo peaks in its second bloom around late November into early December, with hundreds of rose varieties in full color. The surrounding parks — Bosques de Palermo, Jardín Japonés, and Jardín Botánico — are all at their greenest and most active. Locals spread out on the grass for mate sessions, joggers circle the lake, and the whole area takes on a lazy, social energy that's specific to Buenos Aires summer weekends.
Roses are in their second annual bloom, all gardens are at peak greenery, and the long warm evenings make park visits viable well into the evening hoursBooking tipThe Jardín Japonés charges a small entry fee. Everything else is free. Weekend afternoons get crowded — weekday mornings are peaceful.
What to eat in December
In season: fruit
Cherries
Argentine cherry season peaks in December, with fruit arriving from Patagonian orchards in Mendoza and the Río Negro valley. You'll see them at the Mercado de San Telmo and neighborhood fruterías — deep red, firm, and noticeably cheaper than imported cherries the rest of the year.
On menus now
Vitel toné
Cold sliced veal draped in a creamy tuna-and-anchovy sauce — it sounds odd but it's a fixture of Argentine Christmas tables. You'll find it at delis and restaurants through December, and it's surprisingly refreshing in the summer heat. A dish borrowed from Italian tradition that Argentina has fully claimed as its own.
Street food peaks
Helado artesanal
Buenos Aires has one of the world's great ice cream cultures, and December is when it really comes alive. Lines form outside heladerías like Cadore, Rapanui, and neighborhood favorites across the city. Summer fruit flavors — frutilla (strawberry), durazno (peach), sambayón — rotate in alongside the year-round dulce de leche and chocolate.
What to drink
Clericó
The Argentine answer to sangria — white wine mixed with chopped fresh summer fruits like peaches, strawberries, and melon. It shows up at every December gathering and asado. Recipes vary by household, but the good versions use dry torrontés wine and actually taste of fruit rather than sugar.
Festival food
Pan dulce
Argentina's Christmas bread, similar to Italian panettone but with local variations — some bakeries add dulce de leche filling or coat them in chocolate. Bakeries and supermarkets stack them floor to ceiling starting in November, but the artisanal versions from neighborhood panaderías are worth seeking out. Quality ranges wildly.
Regular events in December
Festival Buenos Aires Danza ContemporáneaFree
The city's contemporary dance festival typically runs in late November through December, with performances at venues across the city including the Teatro San Martín and smaller independent spaces. A mix of Argentine and international companies.
Late November through mid-DecemberNavidad en las PlazasFree
Free Christmas-themed concerts and cultural events organized by the city government in plazas across different neighborhoods. Quality varies, but the ones in Plaza de Mayo and Plaza San Martín tend to draw good performers and large, festive crowds.
Throughout December, weekendsFeria de Mataderos summer editionFree
This traditional gaucho fair in the Mataderos neighborhood runs Sundays in the cooler months but shifts to Saturday evenings in summer. Folk music, traditional dance, horseback displays, and regional food stalls — it's one of the most authentically Argentine experiences in the city.
Saturday evenings from December through FebruaryCierre de temporada at Teatro Colón
The Teatro Colón typically wraps its opera and ballet season in December with marquee productions before the summer recess. These closing performances tend to be the prestige productions — well-cast, well-attended, and sometimes with special gala nights.
Early to mid-DecemberBest places this December
Bosques de Palermo and the Rosedal
parkThe city's largest green space is at its most alive in December — roses in bloom, jacaranda stragglers still showing purple, and every bench occupied by someone sharing mate. The lakeside path is good for evening walks when the light goes golden.
PalermoSan Telmo on Sunday mornings
neighborhoodBeyond the famous market, the neighborhood itself transforms on Sundays — street musicians set up on every corner, cafés overflow onto the cobblestones, and the warm weather means you can wander for hours without ducking inside. Plaza Dorrego is the heart of it.
San TelmoCostanera Sur Ecological Reserve
nature reserveA short walk from the gleaming towers of Puerto Madero, this urban wetland reserve feels like another world. December's long evenings make sunset visits ideal — the birdlife is active, the grasslands are green, and you can walk the trails until well past 8 PM.
Puerto MaderoRecoleta Cemetery and surroundings
landmarkThe famous cemetery is worth visiting year-round, but December mornings — before the heat builds — are the most comfortable time to wander the labyrinth of mausoleums. Afterward, the surrounding plazas host weekend craft fairs and the nearby cultural centers stay open late.
RecoletaMercado de San Telmo
marketThe covered market is a refuge on hot December afternoons. The interior stays cool, and this is the month to find seasonal summer fruits, fresh pasta stalls, and some of the best empanadas in the city. The coffee roasters inside have gotten good in recent years.
San TelmoPuerto Madero waterfront at night
waterfrontThe renovated docklands district comes into its own on warm December evenings. The Puente de la Mujer bridge lit up at night, the university campus buzzing with end-of-year energy, and the restaurant strip along the docks — touristy, sure, but the atmosphere on a warm night is hard to argue with.
Puerto MaderoCaminito and La Boca on weekday mornings
neighborhoodLa Boca's famous painted street is always crowded on weekends, but December weekday mornings offer a window before tour buses arrive. The warm light on the colorful corrugated metal buildings photographs well in summer morning sun, and nearby Fundación Proa often has strong exhibitions.
La Boca
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Insider tips
The best asado restaurants fill up on Friday and Saturday nights by 9:30 PM — but Sunday lunch is the traditional asado meal for locals. Go to a parrilla at 1 PM on Sunday and you'll eat better, wait less, and sit next to Argentine families doing what they do best.
If you're here over Christmas, ask your hotel or Airbnb host about attending a local asado. Porteños are hospitable about inviting foreigners to family gatherings, and the Nochebuena asado experience — eating outside at midnight in warm summer air while fireworks erupt — is something a restaurant can't replicate.
The Subte (metro) is cheap and effective for getting around, but it gets oppressively hot in December because most lines lack air conditioning. Carry water and avoid rush hours (8-9:30 AM, 5:30-7:30 PM) if you can. Buses are air-conditioned and often a better choice.
Change money at the official rate through your bank or ATM — the gap between official and parallel exchange rates has narrowed considerably, and the risk of counterfeit bills from informal exchange isn't worth the marginal savings. If locals mention 'el blue,' understand the context before participating.
Palermo Soho restaurant prices have crept up sharply for tourist-facing spots. Walk three or four blocks away from Plaza Armenia and Plaza Serrano and you'll find the same quality at noticeably lower prices — locals know this.
Avoid these mistakes
- Scheduling a full day of outdoor walking tours in the midday heat — by 1 PM, the sun and humidity will drain you. Plan indoor activities (museums, markets, cafés) between noon and 4 PM, and save the walking for morning or late afternoon when temperatures drop.
- Arriving without a dinner reservation during the last two weeks of December — this is when companies hold year-end dinners and families celebrate, and popular restaurants in Palermo and San Telmo book up days in advance.
- Assuming everything will be open on December 24th and 25th — Christmas Eve is more important than Christmas Day in Argentina, and both days see widespread closures. Stock up on food and have a plan, or you'll be eating at your hotel.
- Wearing expensive jewelry or using your phone visibly in La Boca beyond the Caminito tourist strip — the surrounding neighborhood has real safety concerns, and December's tourist crowds attract opportunistic theft. Enjoy Caminito, visit Fundación Proa, then take a taxi out rather than wandering.
Practical tips for December
Book accommodation by early November for stays during the Christmas-New Year's period — Palermo and San Telmo properties fill up fast and prices jump with each passing week. Restaurants increasingly require reservations in December, Thursday through Saturday; use apps or call ahead rather than walking in. The Subte runs slightly reduced schedules on December 24, 25, and 31, and barely operates on January 1 — plan to use taxis or rideshare on those days. Dress code in Buenos Aires is notably more polished than most Latin American capitals; even in summer heat, porteños tend toward smart-casual rather than shorts and flip-flops, at dinner. Tipping is typically 10% at restaurants — it's not always included, so check the bill. Pharmacies stock sunscreen but mark it up heavily in tourist areas; buy at a supermarket like Carrefour or Disco instead. If you're planning day trips to Colonia del Sacramento in Uruguay (a common December addition), book the Buquebus ferry at least a week ahead — summer seats sell out.
FAQ
Is December a good time to visit Buenos Aires?
December is a good time to visit — the weather is warm, the days are long, and the city is still fully operational through the first three weeks. It's not the absolute best month (October and November offer similar weather with lower prices and fewer crowds), but it ranks solidly in the top half. The main drawbacks are higher prices due to holiday season and the partial shutdown over Christmas week. If your dates are flexible, the first two weeks of December tend to offer the best balance of good weather, open venues, and pre-holiday energy.
What is the weather like in Buenos Aires in December?
Warm and mostly sunny with occasional afternoon thunderstorms. Average highs around 28°C (82°F) and lows near 19°C (67°F), with about 67mm of rain spread across roughly seven days. Humidity sits around 63%, which is noticeable but not oppressive. The occasional hot spell can push temperatures above 33°C (91°F) for a day or two. Evenings are comfortably warm — good for outdoor dining. Pack light layers, sunscreen, and an umbrella for the brief but intense afternoon storms.
Is Buenos Aires crowded in December?
Yes, crowd levels are high. The combination of domestic tourism picking up for the holidays, international visitors taking advantage of Southern Hemisphere summer, and end-of-year events means popular neighborhoods like Palermo, San Telmo, and Recoleta are noticeably busier than in shoulder months. That said, the crowds thin dramatically from December 23 onward as locals retreat to family gatherings. Early December feels busy but manageable; Christmas week feels quiet and domestic.
What should I do in Buenos Aires on Christmas Eve?
Nochebuena is a family affair in Buenos Aires, and the city largely shuts down for it. If you can get invited to a local's asado, that's the best experience — families gather outdoors, eat until midnight, then set off fireworks from every balcony and rooftop in the city. If you're on your own, some hotels organize Christmas Eve dinners, and a handful of restaurants in Puerto Madero stay open with special menus. Watching the midnight fireworks from any elevated spot is worthwhile — the entire skyline lights up simultaneously.
How many days do I need in Buenos Aires in December?
Five to seven days lets you cover the main neighborhoods, take a day trip to Tigre or Colonia del Sacramento, catch a tango show or milonga, and still have downtime to sit in cafés and absorb the pace of the city. If you're here over Christmas, add an extra day or two since the holiday shutdown means you'll lose at least one full day of sightseeing. Three days feels rushed; more than ten and you might start running out of distinct experiences unless you're into the food or tango scenes.
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