December in Brest is the windiest month of the year. In December, the weather in Brest is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Brest has 17 cloudy, 7 rainy, 6 snowy, and 1 sunny day in December. The rains are usually moderate. December as well as February, March, and November is considered the most uncomfortable time to visit Brest.