El Chaltén

Patagonia Weather in December

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

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Puerto Madryn El Chaltén Neuquén Puerto Blest

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

What to Expect in Patagonia in December

Patagonia, Argentina is a region in Argentina. The weather in Patagonia in December can be quite varied, with temperatures that range from cold to very warm and precipitation levels ranging from low to heavy. During December, summer is in full swing.

Temperatures

The average highest temperatures fluctuate between cold in El Chaltén at 8°C (46°F) to very warm in General Roca at 31°C (88°F). Nighttime temperatures generally drop to 15°C (59°F) in General Roca and 1°C (34°F) in El Chaltén.

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

Precipitation

In December, precipitation varies across different areas. From low rainfall in Comodoro Rivadavia with an average of 15 mm (0.6 in) to heavy rainfall in El Chaltén with 219 mm (8.6 in).

Average sunshine

Plenty of sunshine can be expected in numerous places in December. Puerto Madryn typically receives 272 hours of sunlight, making it ideal for those seeking sunny weather.

Explore Patagonia by month

Pick a month to see the average temperature, rainfall and sunshine in Patagonia — and find the best time to visit. (based on Puerto Madryn)

January30°C (86°F) February28°C (82°F) March26°C (79°F) April22°C (72°F) May17°C (63°F) June14°C (57°F) This monthJuly14°C (57°F) August16°C (61°F) September18°C (64°F) October22°C (72°F) November25°C (77°F) December28°C (82°F)
Best Time to Visit Patagonia →

Best Places to Visit in Patagonia in December

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

Conditions Temperatures Precipitation
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 Patagonia

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

Temperature range in Patagonia (December)

Precipitation variation in Patagonia (December)

Puerto Madryn

In December Puerto Madryn generally has high temperatures with maximum daytime temperatures around 28°C (82°F), minimum nighttime temperatures around 14°C (57°F) and low monthly rainfall. So on average the conditions are perfect that month.

« November
December
January »
November
December
January
Max temperature
25°C (77°F)
28°C (82°F)
30°C (86°F)
Min temperature
12°C (54°F)
14°C (57°F)
16°C (61°F)
Monthly sun hours
258 hours
272 hours
292 hours
Monthly rainfall
19 mm (0.7 in)
20 mm (0.8 in)
17 mm (0.7 in)
Monthly rainy days
3 days
3 days
3 days
Weather conditions
perfect
perfect
perfect
Climate in Puerto Madryn →

El Chaltén

In December El Chaltén generally has low temperatures with maximum daytime temperatures around 8°C (46°F), minimum nighttime temperatures around 1°C (34°F) and heavy monthly rainfall. So on average the conditions are poor that month.

« November
December
January »
November
December
January
Max temperature
7°C (45°F)
8°C (46°F)
10°C (50°F)
Min temperature
-1°C (30°F)
1°C (34°F)
2°C (36°F)
Monthly sun hours
250 hours
260 hours
250 hours
Monthly rainfall
187 mm (7.4 in)
219 mm (8.6 in)
211 mm (8.3 in)
Monthly rainy days
4 days
4 days
4 days
Weather conditions
poor
poor
poor
Climate in El Chaltén →

Neuquén

In December Neuquén generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 15°C (59°F) and low monthly rainfall. So on average the conditions are perfect that month.

« November
December
January »
November
December
January
Max temperature
28°C (82°F)
31°C (88°F)
33°C (91°F)
Min temperature
12°C (54°F)
15°C (59°F)
17°C (63°F)
Monthly sun hours
282 hours
279 hours
315 hours
Monthly rainfall
20 mm (0.8 in)
15 mm (0.6 in)
12 mm (0.5 in)
Monthly rainy days
3 days
4 days
3 days
Weather conditions
perfect
perfect
perfect
Climate in Neuquén →

Puerto Blest

In December Puerto Blest generally has moderate temperatures with maximum daytime temperatures around 16°C (61°F), minimum nighttime temperatures around 4°C (39°F) and high monthly rainfall. So on average the conditions are unpleasant that month.

« November
December
January »
November
December
January
Max temperature
13°C (55°F)
16°C (61°F)
19°C (66°F)
Min temperature
2°C (36°F)
4°C (39°F)
6°C (43°F)
Monthly sun hours
292 hours
298 hours
335 hours
Monthly rainfall
148 mm (5.8 in)
137 mm (5.4 in)
92 mm (3.6 in)
Monthly rainy days
6 days
6 days
5 days
Weather conditions
poor
unpleasant
pleasant
Climate in Puerto Blest →

Trelew

In December Trelew generally has high temperatures with maximum daytime temperatures around 27°C (81°F), minimum nighttime temperatures around 14°C (57°F) and low monthly rainfall. So on average the conditions are perfect that month.

« November
December
January »
November
December
January
Max temperature
25°C (77°F)
27°C (81°F)
29°C (84°F)
Min temperature
12°C (54°F)
14°C (57°F)
16°C (61°F)
Monthly sun hours
289 hours
281 hours
311 hours
Monthly rainfall
17 mm (0.7 in)
19 mm (0.7 in)
16 mm (0.6 in)
Monthly rainy days
4 days
5 days
4 days
Weather conditions
perfect
perfect
perfect
Climate in Trelew →

Is your destination not in the list? Have a look at all destinations in Patagonia, 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 Patagonia in December.

City Weather Day temp Night temp Rainfall
Puerto Madryn 28°C (82°F) 14°C (57°F) 20 mm (0.8 in)
El Chaltén 8°C (46°F) 1°C (34°F) 219 mm (8.6 in)
Neuquén 31°C (88°F) 15°C (59°F) 15 mm (0.6 in)
Puerto Blest 16°C (61°F) 4°C (39°F) 137 mm (5.4 in)
Trelew 27°C (81°F) 14°C (57°F) 19 mm (0.7 in)
Comodoro Rivadavia 22°C (72°F) 12°C (54°F) 15 mm (0.6 in)

Patagonia weather in December: frequently asked questions

What is the weather like in Patagonia, Argentina in December?

Patagonia, Argentina typically experiences perfect weather in December, part of the summer season. Daytime highs in Puerto Madryn average around 28°C (82°F), and temperatures drop to about 14°C (57°F) at night.

What is the average temperature in Patagonia, Argentina in December?

Puerto Madryn averages a daytime maximum of 28°C (82°F) in December, with overnight lows close to 14°C (57°F).

Does Patagonia, Argentina get a lot of rain in December?

Rain is generally moderate to light in Patagonia, Argentina during December, with Puerto Madryn averaging close to 20 mm (0.8 in).

Is December a Good Time to Visit Patagonia, Argentina?

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

Generally speaking, the best visiting conditions can be found in February, March, April, September, October, November and December offering mostly perfect weather in Puerto Madryn.

Interested in more climate information?

We have much more information about the climate in Patagonia.

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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