January in Joinville is the rainiest month of the year. In January, the weather in Joinville is typically warm. Average daily high temperature in January is about 27 degrees above zero. On average, Joinville has 27 rainy, 2 sunny, 1 cloudy, and 1 partly cloudy day in January. The rains are usually heavy. January as well as February, March, October, and November is considered the most uncomfortable time to visit Joinville.