Mar del Plata Weather in December

December is one of the perfect months to visit Mar del Plata, with daytime temperatures of 24°C (75°F) and lows of 14°C (57°F) at night. Do note that quite a bit of rainfall is typical, averaging around 74 mm (2.9 in).

Rainfall in Mar del Plata in December

Based on our climate data of the past 30 years, about 10 days of rain are anticipated, with 74 mm (2.9 in) on average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.

Temperature in Mar del Plata in December

December is one of the better months to visit Mar del Plata. Expect 24°C (75°F) during the day and 14°C (57°F) at night. December is part of the summer season. Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to around 14°C (57°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.

Sunshine in Mar del Plata in December

Enjoy a sunny month with about 267 hours of sunshine, the clear skies make Mar del Plata even more beautiful.

Wind Speed in Mar del Plata in December

Average wind conditions reach 5 m/s (10 knots) in December. This creates lively weather with fresh winds that make small trees sway noticeably. Remember this is an average: some days are less windy while others have particularly active windy conditions.

Average water temperature in December

With water at 18°C (64°F), it's on the cooler side. Keen swimmers won't be put off, but those who prefer warm water may find it less enjoyable.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Argentina, check out our Mar del Plata's climate page.

Mar del Plata Temperature in December

Min Temperature 14°C (57°F)  

Max Temperature 24°C (75°F)  

Water Temperature 18°C (64°F)  

Chance of Rain 33%  

Precipitation 74 mm (2.9 in)  

Rainy days 10 days  

Humidity 76%  

Windspeed 5 m/s (10 knots)  

Sunshine 267 hours  

Percentage Sunshine 59%  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Mar del Plata typically rise from around 23°C (73°F) at the start of December to approximately 26°C (79°F) by the end. Nights are cool, with lows typically ranging from 11°C (52°F) to 15°C (59°F).

Average temperatures in December

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Daily Historical Precipitation

50-year average (1976-2025)

Average daily rainfall for each day of the month based on long-term records.

Average precipitation in December

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‹ January February March April May June July August September October November December ›

Historical weather for Mar del Plata in December

Browse day-by-day weather records for Mar del Plata spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.

Historical weather Temperatures Precipitation

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‹ January February March April May June July August September October November December ›

Mar del Plata historical weather extremes in December

Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Mar del Plata.

• Mar del Plata recorded its highest December temperature of 38°C (100°F) on December 26, 1998.
• The lowest daytime temperature in December was 14°C (57°F), recorded on December 15, 1984.
• The coldest night in December in Mar del Plata was on December 7, 2005, with a minimum of 1°C (34°F).

What to Wear in Mar del Plata in December

Comfortable temperatures call for an easy wardrobe in December. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Wet weather is likely, so pack waterproof gear for multiple rainy days. Expect water temperatures of around 18°C (64°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Mar del Plata in December

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

9/10

Walking

9/10

Barbeque

8/10

Camping

8/10

Outdoor sports

9/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Argentina, check out our Mar del Plata's climate page.

More climate data for Mar del Plata

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Mar del Plata climate overview or explore weather in Argentina.