Florianópolis weather in December
Temperature, sea and sunshine in December: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in December
Good
Best time to visit: December – April
What is the weather like in Florianópolis in December?
In December, Florianópolis is warm: daytime highs average 26 °C, and even at night it stays warm at around 21 °C. The sea averages 24.2 °C – pleasant for swimming. Expect around 6 hours of sunshine a day. It rains often – on about 18 days, adding up to 156 mm. The air is often humid and muggy. All in all, December is a good month for a holiday in Florianópolis.
December compared
How the weather changes from November to January. Tap a month to open it.
| NovemberNov | DecemberDec | JanuaryJan | |
|---|---|---|---|
| Score | 58 | 68 | 68 |
| Day | 24° | 26° | 27° |
| Night | 19° | 21° | 22° |
| Sea | 22° | 24° | 26° |
| Sun | 5 h | 6 h | 5 h |
| Rain days | 17 | 18 | 22 |
More details for December
- Daylight
- 13 h 52 min05:13 – 19:05
- UV index
- 12 · extremeclear sky, noon (estimate)All months
- Muggy days
- 22 daysdew point 18 °C or more
- Wind
- 14 km/haverage daily peak
- Cloud cover
- 75 %on average
- Hot days
- 3 days30 °C or more
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 35 %100 %
- Seaweight 25 %100 %
- Sunshineweight 20 %42 %
- Few rainy daysweight 20 %0 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in December
- Swimwear
- Sunscreen
- Sunglasses & sun hat
- Light, breathable clothes
- Insect repellent
- Rain jacket or umbrella
Florianópolis in December: quick answers
Is Florianópolis hot in December?
Warm rather than hot: in December, daytime highs in Florianópolis average 26 °C and nights cool to about 21 °C. On about 3 days the thermometer climbs to 30 °C or more.
Can you swim in Florianópolis in December?
Yes. In December the sea averages 24.2 °C – pleasant for swimming.
Does it rain much in Florianópolis in December?
It rains often – on about 18 days, adding up to 156 mm.
Florianópolis month by month
The whole year in FlorianópolisAll destinations: BrazilWhere to go in DecemberSea temperature in December
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0)