April in Bergamo is the windiest month of the year. In April, the weather in Bergamo is typically warm. Average daily high temperature in April is about 15 degrees above zero. On average, Bergamo has 13 rainy, 10 sunny, and 7 partly cloudy days in April. The rains are usually heavy. April as well as January, February, March, and May is considered the most uncomfortable time to visit Bergamo.