Taking into account the local weather in Pyhäjärvi is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually July and August with an average temp of 57°F, while the coldest months are January and February with an average of 22°F. The snowiest months in Pyhäjärvi are January, February, December, and March, with each month seeing an average of 84 inches of snowfall.