January in Imbituba is the rainiest month of the year. In January, the weather in Imbituba is typically warm. Average daily high temperature in January is about 27 degrees above zero. On average, Imbituba has 24 rainy, 3 sunny, 2 cloudy, and 2 partly cloudy days in January. The rains are usually heavy. January as well as February, March, and December is considered the most uncomfortable time to visit Imbituba.