January in Sao Leopoldo is the rainiest month of the year. In January, the weather in Sao Leopoldo is typically hot. Average daily high temperature in January is about 28 degrees above zero. On average, Sao Leopoldo has 14 sunny, 13 rainy, and 4 partly cloudy days in January. The rains are usually heavy. January as well as February and September is considered the most uncomfortable time to visit Sao Leopoldo.