April in Pistoia is the rainiest month of the year. In April, the weather in Pistoia is typically warm. Average daily high temperature in April is about 15 degrees above zero. On average, Pistoia has 14 rainy, 8 sunny, 5 partly cloudy, and 3 cloudy days in April. The rains are usually heavy. April as well as January, February, March, and November is considered the most uncomfortable time to visit Pistoia.