Florianopolis is typically warm in December.

Maximum temperatures go up compared to the previous month from +26°C to +28°C. The minimum temperature also goes up from +20°C to +22°C.

It’s generally warm, but pack a long-sleeve shirt for evenings.

December is one of the warmest months in Florianopolis, here is the comparison with other months:

December weather is still as ok as in November. It’s getting warmer as December arrives. The average maximum temperature goes up from +26°C to +28°C during the day. Prepare for more rain. Average rainfall goes from 118 mm to 128 mm. Humidity levels don’t change as the month goes on, averaging around 80%. The average wind speed doesn’t change much during December, staying around 3 m/s. The amount of sunny days stay about the same, averaging 2 sunny days during the month.

January brings much the same weather, it remains ok.

The climate in Florianopolis in December has not changed much over the last 43 years.

The average temperature was the lowest in 1983 (+24°C) and the highest in 2019 (+26°C). The driest year was 1988 with only 947 mm of rainfall, and the wettest year was 2022 with 2773 mm.

For this page, we’ve looked at the typical weather in Florianopolis, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.