December in Teresopolis is the rainiest month of the year. In December, the weather in Teresopolis is typically warm. Average daily high temperature in December is about 24 degrees above zero. On average, Teresopolis has 29 rainy and 2 sunny days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Teresopolis.