December in Cesky Tesin is the windiest month of the year. In December, the weather in Cesky Tesin is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Cesky Tesin has 11 rainy, 9 cloudy, 4 snowy, 4 sunny, and 3 partly cloudy days in December. The rains are usually light. December as well as February, March, and November is considered the most uncomfortable time to visit Cesky Tesin.