Climate averages 1991–2020
Florianópolis weather
in December.
A warm, wet month: the 4th warmest and the 9th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a warm month in Florianópolis: daytime highs average 26.4°C and nights cool to about 21.1°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 126 mm of rain on roughly 15 days, which makes December a wet month (the 9th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 13 h 51 min on an average December day.
The nearest other city in this atlas is São José (Santa Catarina, 27.62°S 48.63°W), Brazil (8 km away). In December its highs average 26.9°C, about as warm as Florianópolis, with 167 mm of rain.
Among the 448 cities listed in Brazil, Florianópolis ranks joint 365th of 448 for the warmest December highs and joint 113th of 448 for the driest December (rainfall, lowest first). The mean December high of those 448 cities is 28.5°C; Florianópolis is 2.1°C cooler than that mean.
From December to January, average highs rise by 1.0°C to 27.3°C, and monthly rainfall rises from 126 mm to 181 mm.
The annual picture
December in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Florianópolis climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 27.3°C22.3°C | 22.3°C | 181 | 18.9 | 13.714 h |
| February | 27.4°C22.5°C | 22.5°C | 161 | 17.3 | 13.113 h |
| March | 26.5°C21.6°C | 21.6°C | 125 | 17.2 | 12.312 h |
| April | 24.9°C19.6°C | 19.6°C | 84 | 10.4 | 11.511 h |
| May | 22.0°C16.7°C | 16.7°C | 110 | 10.2 | 10.811 h |
| June | 20.3°C14.7°C | 14.7°C | 94 | 8.9 | 10.410 h |
| July | 19.4°C13.5°C | 13.5°C | 84 | 9.0 | 10.611 h |
| August | 20.2°C14.3°C | 14.3°C | 86 | 8.8 | 11.111 h |
| September | 21.0°C15.8°C | 15.8°C | 132 | 12.4 | 11.912 h |
| October | 22.7°C17.7°C | 17.7°C | 122 | 13.7 | 12.713 h |
| November | 24.3°C19.1°C | 19.1°C | 116 | 14.0 | 13.513 h |
| December, selected | 26.4°C21.1°C | 21.1°C | 126 | 15.0 | 13.814 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
December in nearby cities
- São José (Santa Catarina, 27.62°S 48.63°W), Brazil in DecemberBrazil · 8 kmHigh 26.9°C · Low 20.7°C · 167 mm rain
- Palhoça in DecemberBrazil · 13 kmHigh 27.0°C · Low 20.4°C · 169 mm rain
- Itapema in DecemberBrazil · 57 kmHigh 27.3°C · Low 20.9°C · 126 mm rain
- Camboriú in DecemberBrazil · 64 kmHigh 26.8°C · Low 21.2°C · 156 mm rain
- Brusque in DecemberBrazil · 66 kmHigh 27.6°C · Low 20.2°C · 176 mm rain
- Balneário Camboriú in DecemberBrazil · 68 kmHigh 26.4°C · Low 21.3°C · 156 mm rain
- Itajaí in DecemberBrazil · 77 kmHigh 26.1°C · Low 21.5°C · 156 mm rain
- Gaspar in DecemberBrazil · 84 kmHigh 27.4°C · Low 20.4°C · 176 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Florianópolis) is explained once on the Florianópolis year overview and on the Sources, method and limits page.