January in Pisa is the coldest month of the year. In January, the weather in Pisa is typically warm. Average daily high temperature in January is about 10 degrees above zero. On average, Pisa has 12 rainy, 12 sunny, 4 partly cloudy, and 3 cloudy days in January. The rains are usually heavy. January as well as February, March, November, and December is considered the most uncomfortable time to visit Pisa.