December in Wroclaw is the windiest month of the year. In December, the weather in Wroclaw is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Wroclaw has 15 cloudy, 8 rainy, 4 sunny, and 4 partly cloudy 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 Wroclaw.