April in Hagen is the sunniest month of the year. In April, the weather in Hagen is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Hagen has 13 rainy, 10 partly cloudy, and 7 sunny days in April. The rains are usually moderate. April as well as January, February, March, and October is considered the most uncomfortable time to visit Hagen.