Weather in Mar del Plata: December
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Average day temperature: | 75.1°F |
| Average night temperature: | 59.7°F | |
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Sea water temperature: | 65.3°F |
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Number of sunny days: | 22 days |
| Day length: | 14.6 - 14.8 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 2.1 in. | |
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forecast
| Mar del Plata |
temperature
| Mar del Plata |
Air temperature in December, °F
The highest day temperature during December of 2025 was 86°F. At the same time the lowest night temperature was 51°F. Daily and nightly averages during December were 73.9°F and 61.1°F.
Sea water temperature in Mar del Plata in December, °F
The average sea water temperature in December of 2025 was 66.5°F. The highest and lowest sea temperatures during the month were 70.3°F and 62.2°F.
Mostly all days in December are sunny but cloudy days are also possible.
Precipitation total in December, in.
Precipitation total value in Mar del Plata in December is 2.3 in. Other months of the year show relatively similar values.
The average wind speed value in December is 12.7 mph It makes December one of the most windy months of the year.
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in December is: 10.8.
Best time for vacation in Mar del Plata
Mar del Plata on a weather map
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