Argentina

Argentina Weather in December

Average temperatures, rainfall, sunshine and the best places to visit in Argentina in December.

Are you planning a trip a to Argentina in December and wondering what kind of weather to expect? This page has all the details you need.

What to Expect in Argentina in December

Argentina has a wide variety of climate types. During December, you can expect temperatures that range from cold to very warm and precipitation levels ranging from low to heavy. December is a summer month.

Temperatures

The average highest temperatures fluctuate between cold in Las Cuevas at 8°C (46°F) to very warm in Las Lomitas at 35°C (95°F). Nighttime temperatures generally drop to 22°C (72°F) in Las Lomitas and -4°C (25°F) in Las Cuevas.

For specific regional insights in Argentina, refer to the map provided below.

Precipitation

In December, precipitation varies across different areas. From low rainfall in Paso De Indios with an average of 10 mm (0.4 in) to heavy rainfall in El Mollar with 413 mm (16 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in December. Buenos Aires typically receives 273 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Argentina by month

Best Places to Visit in Argentina in December

Click on a destination dot for more details. Toggle the map to compare temperatures or precipitation across Argentina.

perfect weather
pleasant
tolerable
unpleasant
poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).

Popular Destinations in Argentina

What is the weather like in December for some of the most popular destinations in Argentina?

Temperature range in Argentina (December)

Precipitation variation in Argentina (December)

Buenos Aires

In December Buenos Aires generally has high temperatures with maximum daytime temperatures around 29°C (84°F), minimum nighttime temperatures around 17°C (63°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
26°C (79°F)
29°C (84°F)
30°C (86°F)
Min temperature
14°C (57°F)
17°C (63°F)
18°C (64°F)
Monthly sun hours
264 hours
273 hours
285 hours
Monthly rainfall
96 mm (3.8 in)
88 mm (3.5 in)
90 mm (3.5 in)
Monthly rainy days
9 days
8 days
8 days
Weather conditions

San Carlos de Bariloche

In December San Carlos de Bariloche generally has pleasant temperatures with maximum daytime temperatures around 18°C (64°F), minimum nighttime temperatures around 5°C (41°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

November
December
January
Max temperature
15°C (59°F)
18°C (64°F)
21°C (70°F)
Min temperature
2°C (36°F)
5°C (41°F)
6°C (43°F)
Monthly sun hours
292 hours
298 hours
335 hours
Monthly rainfall
63 mm (2.5 in)
57 mm (2.2 in)
37 mm (1.5 in)
Monthly rainy days
6 days
5 days
5 days
Weather conditions

Mar del Plata

In December Mar del Plata generally has high temperatures with maximum daytime temperatures around 24°C (75°F), minimum nighttime temperatures around 14°C (57°F) and moderate monthly rainfall. So on average the conditions are perfect that month.

November
December
January
Max temperature
21°C (70°F)
24°C (75°F)
26°C (79°F)
Min temperature
12°C (54°F)
14°C (57°F)
16°C (61°F)
Monthly sun hours
225 hours
267 hours
285 hours
Monthly rainfall
84 mm (3.3 in)
74 mm (2.9 in)
83 mm (3.3 in)
Monthly rainy days
10 days
10 days
9 days
Weather conditions

Mendoza

In December Mendoza generally has high temperatures with maximum daytime temperatures around 30°C (86°F), minimum nighttime temperatures around 16°C (61°F) and moderate monthly rainfall. So on average the conditions are pleasant that month.

November
December
January
Max temperature
27°C (81°F)
30°C (86°F)
31°C (88°F)
Min temperature
13°C (55°F)
16°C (61°F)
18°C (64°F)
Monthly sun hours
307 hours
302 hours
311 hours
Monthly rainfall
67 mm (2.6 in)
70 mm (2.8 in)
75 mm (3 in)
Monthly rainy days
4 days
5 days
6 days
Weather conditions

Salta

In December Salta generally has high temperatures with maximum daytime temperatures around 25°C (77°F), minimum nighttime temperatures around 15°C (59°F) and heavy monthly rainfall. So on average the conditions are poor that month.

November
December
January
Max temperature
24°C (75°F)
25°C (77°F)
25°C (77°F)
Min temperature
13°C (55°F)
15°C (59°F)
16°C (61°F)
Monthly sun hours
199 hours
198 hours
183 hours
Monthly rainfall
208 mm (8.2 in)
284 mm (11 in)
307 mm (12 in)
Monthly rainy days
9 days
13 days
14 days
Weather conditions

Is your destination not in the list? Have a look at all destinations in Argentina.

In our records: Argentina December extremes

Notable December records observed across cities in Argentina in our climate database (1976 – 2026). Historic readings can vary in quality, so treat these as illustrative.

  • In our records, the warmest December day in Argentina reached 48°C (118°F) in Santiago del Estero on December 19, 1995.

Popular cities in December

Day & night temperatures, rainfall and average weather in Argentina in December.

City Weather Day temp Night temp Rainfall
Buenos Aires 29°C (84°F) 17°C (63°F) 88 mm (3.5 in)
San Carlos de Bariloche 18°C (64°F) 5°C (41°F) 57 mm (2.2 in)
Salta 25°C (77°F) 15°C (59°F) 284 mm (11 in)
Puerto Iguazú 32°C (90°F) 21°C (70°F) 199 mm (7.8 in)
San Rafael 30°C (86°F) 15°C (59°F) 56 mm (2.2 in)
Ushuaia 11°C (52°F) 3°C (37°F) 118 mm (4.6 in)

Argentina weather in December: frequently asked questions

What is the weather like in Argentina in December?

Expect perfect weather across Argentina in December. The popular destination of Buenos Aires averages 29°C (84°F) by day and 17°C (63°F) at night during this summer month.

What is the average temperature in Argentina in December?

Daytime temperatures in Buenos Aires peak at roughly 29°C (84°F) in December, dropping to about 17°C (63°F) overnight.

Does Argentina get a lot of rain in December?

Not particularly. Buenos Aires averages just 88 mm (3.5 in) of rain in December, making it a mostly dry month for Argentina.

Is December a Good Time to Visit Argentina?

We believe that December is one of the best times to visit Argentina with overall perfect weather in Buenos Aires. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Argentina is in March, April, May, September, November and December with generally perfect weather in Buenos Aires. The weather in January, June and July, on the other hand, tends to be tolerable.

Interested in more climate information?

We have much more information about the climate in Argentina.

Weather and climate has detailed information for every country in the world. Are you going to Argentina? Get detailed historical weather averages for many cities in Argentina.

Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.

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