The highest day temperature in December 2020 was 93°F. The lowest night temperature was 46°F. The average values for day and night temperatures during December were 77.3°F и 59.0°F respectivly.

The average sea surface temperature in December 2020 for Mar del Plata was 66.7°F. The maximum and minimum values were 63.2°F and 72.4°F respectively.

Most of the days in December are sunny but you can also expect cloudy and gloomy days.

Precipitation total in December for Mar del Plata is 2.4 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 13.4 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Mar del Plata in December is 11.5 hours.