December in Swinoujscie is the rainiest and the windiest month of the year. In December, the weather in Swinoujscie is typically cold. Average daily high temperature in December is about 4 degrees above zero. On average, Swinoujscie has 19 rainy, 9 cloudy, 2 sunny, and 1 partly cloudy day in December. The rains are usually moderate. December as well as January, February, October, and November is considered the most uncomfortable time to visit Swinoujscie.