Weather is only one factor, but it can really affect your travel plans, especially if you're planning an extended stay in Kihnu. The hottest months are usually July and August with an average temp of 61°F, while the coldest months are February and January with an average of 30°F. The snowiest months in Kihnu are January, December, November, and April, with each month seeing an average of 9 inches of snowfall.