November in Viamão is the windiest month of the year. In November, the weather in Viamão is typically warm. Average daily high temperature in November is about 25 degrees above zero. On average, Viamão has 15 sunny, 9 partly cloudy, and 6 rainy days in November. The rains are usually moderate. November as well as April is considered the most comfortable time to visit Viamão.