January weather forecast in Mariehamn

January in Mariehamn is the windiest and the cloudiest month of the year. In January, the weather in Mariehamn is typically freezing. Average daily high temperature in January is about zero. On average, Mariehamn has 13 cloudy, 11 partly cloudy, 3 rainy, 2 snowy, and 2 sunny days in January. The rains are usually moderate. January as well as March, April, October, and November is considered the most uncomfortable time to visit Mariehamn.