October in Savonlinna is the rainiest month of the year. In October, the weather in Savonlinna is typically cold. Average daily high temperature in October is about 6 degrees above zero. On average, Savonlinna has 17 rainy, 12 cloudy, and 2 sunny days in October. The rains are usually moderate. October as well as April and November is considered the most uncomfortable time to visit Savonlinna.