In December, the weather in Balneário Camboriú is typically warm. Average daily high temperature in December is about 26 degrees above zero. On average, Balneário Camboriú has 19 rainy, 5 partly cloudy, 4 sunny, and 3 cloudy days in December. The rains are usually heavy. December as well as January, February, March, and October is considered the most uncomfortable time to visit Balneário Camboriú.