January in Riva del Garda is the snowiest and the coldest month of the year. In January, the weather in Riva del Garda is typically cold. Average daily high temperature in January is about 1 degree above zero. On average, Riva del Garda has 7 sunny, 7 partly cloudy, 6 snowy, 6 cloudy, and 5 rainy days in January. The snowfalls are usually heavy.