December in Roja is the windiest and the cloudiest month of the year. In December, the weather in Roja is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Roja has 11 cloudy, 9 rainy, 9 partly cloudy, and 2 snowy days in December. The rains are usually moderate. December as well as January, April, October, and November is considered the most uncomfortable time to visit Roja.