April in Kastoria is the rainiest and the windiest month of the year. In April, the weather in Kastoria is typically warm. Average daily high temperature in April is about 14 degrees above zero. On average, Kastoria has 13 rainy, 8 sunny, 7 partly cloudy, and 2 cloudy days in April. The rains are usually moderate. April as well as January, February, March, and November is considered the most uncomfortable time to visit Kastoria.