Taking into account the local weather in Läsäkoski can help you maximize your time at the pool during your trip. The hottest months are usually July and August with an average temp of 59°F, while the coldest months are January and February with an average of 23°F. The snowiest months in Läsäkoski are January, December, February, and March, with each month seeing an average of 87 inches of snowfall.