January in Pori is the snowiest, the cloudiest, and the most freezing month of the year. In January, the weather in Pori is typically freezing. Average daily high temperature in January is about 2 degrees below zero. On average, Pori has 14 cloudy, 8 partly cloudy, 4 snowy, 3 sunny, and 2 rainy days in January. The snowfalls are usually light.