In October, the weather in Florianopolis is typically warm. Average daily high temperature in October is about 23 degrees above zero. On average, Florianopolis has 18 rainy, 7 cloudy, 3 sunny, and 3 partly cloudy days in October. The rains are usually heavy. October as well as January, February, March, and December is considered the most uncomfortable time to visit Florianopolis.