January weather forecast in Porvoo

January in Porvoo is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Porvoo is typically freezing. Average daily high temperature in January is about 4 degrees below zero. On average, Porvoo has 20 snowy, 10 cloudy, and 1 sunny day in January. The snowfalls are usually moderate.