The highest day temperature in January 2026 was 93°F. The lowest night temperature was 55°F. The average values for day and night temperatures during January were 75.0°F и 62.9°F respectivly.

The average sea surface temperature in January 2026 for Mar del Plata was 71.8°F. The maximum and minimum values were 69.0°F and 75.2°F respectively.

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

Precipitation total in January for Mar del Plata is 2.1 in.

The average wind speed in January is 13.3 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 January is 11.4 hours.