December in Písek is the windiest month of the year. In December, the weather in Písek is typically cold. Average daily high temperature in December is about 3 degrees above zero. On average, Písek has 15 cloudy, 6 rainy, 6 partly cloudy, and 4 sunny days in December. The rains are usually light. December as well as January, February, March, and November is considered the most uncomfortable time to visit Písek.