In March, the weather in Florianopolis is typically warm. Average daily high temperature in March is about 27 degrees above zero. On average, Florianopolis has 22 rainy, 4 partly cloudy, 3 sunny, and 2 cloudy days in March. The rains are usually heavy. March as well as January, February, October, and December is considered the most uncomfortable time to visit Florianopolis.