The highest day temperature in December 2025 was 92°F. The lowest night temperature was 57°F. The average values for day and night temperatures during December were 83.3°F и 68.5°F respectivly.

The average sea surface temperature in December 2025 for Arroio do Silva was 75.2°F. The maximum and minimum values were 71.2°F and 80.8°F respectively.

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

Precipitation total in December for Arroio do Silva is 1.8 in.

The average wind speed in December is 5.8 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 Arroio do Silva in December is 6.4 hours.