January in Perugia is the cloudiest and the coldest month of the year. In January, the weather in Perugia is typically cold. Average daily high temperature in January is about 8 degrees above zero. On average, Perugia has 15 partly cloudy, 9 sunny, 5 rainy, and 2 cloudy days in January. The rains are usually light. January as well as February is considered the most uncomfortable time to visit Perugia.