Offshore Stays

Surf Florianópolis in December

Surfing Florianópolis in December: outside the main surf season, air around 23°C, sea around 24°C, 4.9 mm of rain a day on average. Wetsuit: boardshorts or a rash vest.

Surf season

Off-season

Air temperature

23°C

Sea temperature

24°C

Rain

4.9 mm/day

Wind

16 km/h avg

Average wave height

1.2 m (4 ft)

Big days (top 10%)

1.7 m (5 ft)+

Swell period

8 s

Main swell direction

From E (90°)

What to wear: with the sea around 24°C in December, expect boardshorts or a rash vest.

Surf size in Florianópolis in December

Offshore of Florianópolis, waves in December average 1.2 m (4 ft), below the year-round average of 1.3 m — the 10th biggest month of the year. One hour in ten is 1.7 m (5 ft) or bigger. The dominant swell runs at about 8 seconds from the E.

These are open-ocean figures from 10 years of hourly wave data, not a beach forecast: a sheltered break will be smaller, an exposed reef or point can be bigger.

December in the context of Florianópolis's surf season

Florianópolis's main surf season runs March–October. December is outside it.

Full Florianópolis surf and remote-work guide →

Frequently asked questions

Is December a good month to surf Florianópolis?
December is outside Florianópolis's main surf season (March–October), so surf is less reliable, though it can still work on the right day.
How warm is the sea in Florianópolis in December?
About 24°C on average, which calls for boardshorts or a rash vest.
What is the weather like in Florianópolis in December?
Air temperature averages 23°C, with about 4.9 mm of rain per day and average winds of 16 km/h.
Climate: NASA POWER (MERRA-2) monthly climatology, 2001–2020. Sea temperature: NOAA Coral Reef Watch CoralTemp v3.1, 5 km monthly SST, 2015–2025 mean (nearest ocean cell). Surf season is Offshore Stays editorial. Waves: Open-Meteo Marine API, ECMWF ERA5-Ocean hourly reanalysis, 2016–2025 (offshore grid cell 28.0°S 48.5°W), retrieved 22 Oct 2026.