The highest day temperature in December 2025 was 90°F. The lowest night temperature was 78°F. The average values for day and night temperatures during December were 87.7°F и 80.6°F respectivly.

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

Precipitation total in December for Cabo de Santo Agostinho is 0.6 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 9.0 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 Cabo de Santo Agostinho in December is 5.3 hours.