The hottest month in Florianopolis is February when the average maximum temperature is 29°, average temperature is 25° and average minimum temperature is 22°.
The coolest month in Florianopolis is July when the average maximum temperature is 21°, average temperature is 17° and average minimum temperature is 13°.
The longest days in Florianopolis are in December, with an average of 13.9 hours of daylight per day. June has the shortest days with an average of 10.4 hours of daylight per day.
The sunniest days in Florianopolis are in February which has the most hours of sunshine per day with an average of 7.2 hours of sunshine per day, making it a quite sunny month with some cloud cover. June has the least sunshine with an average of 6.3 hours of sunshine per day, making it a quite sunny month with some cloud cover.
The ultraviolet index is the highest in January when it reaches 15 and lowest in June when it reaches 4.3.
An ultraviolet index reading above 11 indicates an extreme risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 10 minutes. Take all precautions because unprotected skin and eyes can burn in minutes. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.
The warmest sea water temperatures in Florianopolis are found in February when they peak at 26° and lowest in August when they dip to 19°.
The sea is best for swimming between November and May when the temperature is above 22° which is warm and pleasant for relaxing and swimming for long periods.
The wettest month in Florianopolis is March with 21.5cm of rain and February has the most days of rain with 15.6 days with some rain, a wet time to visit the beach.
The driest month in Florianopolis is July with 3.1cm of rain and August has the fewest days of rain with 9.4 days with some rain, a dry time to visit the beach.
The most humid month in Florianopolis is February with a dew point (an indicator of humidity) of 23° which is very humid and quite uncomfortable for most unless you are on a beach. At night you would most likely require a fan.
The least humid month in Florianopolis is July with a dew point of 15° which is comfortable for everyone.
The most windy month in Florianopolis is September when the average maximum windspeed is 25kmh and the average wind speed is 13kmh.
The least windy month in Florianopolis is April when the average maximum windspeed is 21kmh and the average wind speed is 10kmh.