December in Hersonisos is the cloudiest month of the year. In December, the weather in Hersonisos is typically warm. Average daily high temperature in December is about 15 degrees above zero. On average, Hersonisos has 14 rainy, 11 partly cloudy, 5 sunny, and 1 cloudy day in December. The rains are usually heavy. December as well as January and February is considered the most uncomfortable time to visit Hersonisos.