October in Florianopolis is the cloudiest month of the year. In October, the weather in Florianopolis is typically warm. Average daily high temperature in October is about 21 degrees above zero. On average, Florianopolis has 15 rainy, 7 cloudy, 6 sunny, and 3 partly cloudy days in October. The rains are usually heavy. October as well as January and December is considered the most uncomfortable time to visit Florianopolis.