In November, the weather in Mariehamn is typically cold. Average daily high temperature in November is about 5 degrees above zero. On average, Mariehamn has 10 rainy, 9 cloudy, 9 partly cloudy, and 2 sunny days in November. The rains are usually moderate. November as well as January, March, April, and October is considered the most uncomfortable time to visit Mariehamn.