The highest day temperature in December 2025 was 91°F. The lowest night temperature was 66°F. The average values for day and night temperatures during December were 82.8°F и 72.3°F respectivly.

The average sea surface temperature in December 2025 for Itapema was 78.2°F. The maximum and minimum values were 75.2°F and 80.0°F respectively.

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

Precipitation total in December for Itapema is 2.3 in. It makes december one of the most rainy months of the year.

The average wind speed in December is 7.1 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 Itapema in December is 5.0 hours.