February in Viamão is the rainiest and the hottest month of the year. In February, the weather in Viamão is typically hot. Average daily high temperature in February is about 29 degrees above zero. On average, Viamão has 15 rainy, 11 sunny, and 3 partly cloudy days in February. The rains are usually heavy. February as well as {{month_nom: February}}, and {{month_nom: February}} is considered the most uncomfortable time to visit Viamão.