December in Otwock is the windiest month of the year. In December, the weather in Otwock is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Otwock has 14 cloudy, 10 rainy, 5 snowy, and 2 sunny days in December. The rains are usually moderate. December as well as February, March, April, and November is considered the most uncomfortable time to visit Otwock.