Iberá Wetlands Weather in December

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

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Mercedes Colonia Carlos Pellegrini

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

What to Expect in Iberá Wetlands in December

Iberá Wetlands, Argentina is a region in Argentina. December in Iberá Wetlands generally has very warm temperatures, with high precipitation. The month of December is in the summer season.

Temperatures

You can expect very warm maximum daytime temperatures of around 31°C (88°F) and nighttime temperatures around 18°C (64°F) in Mercedes. The temperatures mentioned for both day and night are typical averages. However some days might get even hotter. It's best to stay prepared by wearing cloths suitable for the warmth.

To learn more about the conditions in specific areas of Iberá Wetlands, Argentina, check out the map below.

Precipitation

In December, precipitation varies across different areas. From high rainfall in Mercedes with an average of 139 mm (5.5 in) to high rainfall in Colonia Carlos Pellegrini with 155 mm (6.1 in).

Average sunshine

December brings good sunshine to many areas. Mercedes sees around 291 hours of sunlight, great for visitors looking for bright days.

Explore Iberá Wetlands by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Best Places to Visit in Iberá Wetlands in December

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

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 Iberá Wetlands

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

Temperature range in Iberá Wetlands (December)

Precipitation variation in Iberá Wetlands (December)

Mercedes

In December Mercedes generally has very high temperatures with maximum daytime temperatures around 31°C (88°F), minimum nighttime temperatures around 18°C (64°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« November
December
January »
November
December
January
Max temperature
28°C (82°F)
31°C (88°F)
32°C (90°F)
Min temperature
17°C (63°F)
18°C (64°F)
20°C (68°F)
Monthly sun hours
277 hours
291 hours
272 hours
Monthly rainfall
137 mm (5.4 in)
139 mm (5.5 in)
136 mm (5.4 in)
Weather conditions
pleasant
tolerable
tolerable
Climate in Mercedes →

Colonia Carlos Pellegrini

In December Colonia Carlos Pellegrini generally has very high temperatures with maximum daytime temperatures around 33°C (91°F), minimum nighttime temperatures around 20°C (68°F) and high monthly rainfall. So on average the conditions are tolerable that month.

« November
December
January »
November
December
January
Max temperature
30°C (86°F)
33°C (91°F)
33°C (91°F)
Min temperature
18°C (64°F)
20°C (68°F)
22°C (72°F)
Monthly rainfall
150 mm (5.9 in)
155 mm (6.1 in)
159 mm (6.3 in)
Monthly rainy days
9 days
8 days
9 days
Weather conditions
tolerable
tolerable
tolerable
Climate in Colonia Carlos Pellegrini →

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

City Weather Day temp Night temp Rainfall
Mercedes 31°C (88°F) 18°C (64°F) 139 mm (5.5 in)
Colonia Carlos Pellegrini 33°C (91°F) 20°C (68°F) 155 mm (6.1 in)

Iberá Wetlands weather in December: frequently asked questions

What is the weather like in Iberá Wetlands, Argentina in December?

Iberá Wetlands, Argentina typically experiences unpleasant weather in December, part of the summer season. Daytime highs in Mercedes average around 31°C (88°F), and temperatures drop to about 18°C (64°F) at night.

What is the average temperature in Iberá Wetlands, Argentina in December?

Average temperatures in Iberá Wetlands, Argentina during December range from a nighttime low near 18°C (64°F) to a daytime high around 31°C (88°F) in Mercedes.

Does Iberá Wetlands, Argentina get a lot of rain in December?

Iberá Wetlands, Argentina sees substantial rainfall in December. Mercedes typically averages about 139 mm (5.5 in), a mix of wet and dry days, but bring an umbrella.

Is December a Good Time to Visit Iberá Wetlands, Argentina?

In our view, December might not be the best time to travel to Iberá Wetlands, Argentina with often tolerable weather in Mercedes.

Generally speaking, the best visiting conditions can be found in May, June, July, August and September offering mostly perfect weather in Mercedes. In contrast, January, February and December tend to have unpleasant weather conditions.

Interested in more climate information?

We have much more information about the climate in Iberá Wetlands.

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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