Florianópolis weather in August
Temperature, sea and sunshine in August: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in August
Poor
Best time to visit: December – April
What is the weather like in Florianópolis in August?
In August, Florianópolis is mild: daytime highs average 20 °C, and nights cool down to about 14 °C. The sea averages 17.8 °C – bracing, so a wetsuit helps for longer swims. Expect around 5 hours of sunshine a day. Rain is frequent, with about 10 rainy days and 91 mm in total. All in all, August is not an ideal month for a holiday in Florianópolis.
August compared
How the weather changes from July to September. Tap a month to open it.
| JulyJul | AugustAug | SeptemberSep | |
|---|---|---|---|
| Score | 26 | 30 | 31 |
| Day | 20° | 20° | 21° |
| Night | 14° | 14° | 16° |
| Sea | 18° | 18° | 19° |
| Sun | 5 h | 5 h | 5 h |
| Rain days | 9 | 10 | 13 |
More details for August
- Daylight
- 11 h 7 min06:46 – 17:52
- UV index
- 6 · highclear sky, noon (estimate)
- Muggy days
- 2 daysdew point 18 °C or more
- Wind
- 12 km/haverage daily peak
- Cloud cover
- 64 %on average
- Hot days
- 0 days30 °C or more
- Time zone
- UTC−3America/Sao_Paulo
How the score comes together
- Temperatureweight 35 %22 %
- Seaweight 25 %11 %
- Sunshineweight 20 %38 %
- Few rainy daysweight 20 %61 %
Each factor is rated from 0 to 100 % and weighted for the travel style “Sun, sea & sand”.
What to pack in August
- Wetsuit for longer swims
- Sunscreen
- A jumper for the evenings
- Rain jacket or umbrella
Florianópolis in August: quick answers
Is Florianópolis hot in August?
No. In August, Florianópolis is mild: daytime highs average 20 °C and nights drop to about 14 °C.
Can you swim in Florianópolis in August?
Only if you don't mind cold water: in August the sea averages just 17.8 °C. Comfortable swimming is possible from October to May.
Does it rain much in Florianópolis in August?
Rain is frequent, with about 10 rainy days and 91 mm in total.
Florianópolis month by month
The whole year in FlorianópolisAll destinations: Brazil
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, GeoNames (CC BY 4.0)