If you're looking for summer vibes, the best time to travel to Savonlinna is in July, June and August, when the average temperature reaches 14.93 °C, while May, June and July are the 3 sunniest months of the year, with an average of 141.94 hours.
However, if you prefer colder temperatures, make sure you visit Savonlinna during January, February or March to experience an average of -7.45 °C.
For those who don't care too much about temperatures, but want to avoid getting wet in the rain, it's important to avoid travelling during January, February and March, when the average precipitation in Savonlinna is 4.55 mm, while the months of January, February and March are drier, with an average of 0 mm.