If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Olbernhau: The hottest months are usually July and August with an average temp of 62°F, while the coldest months are January and February with an average of 33°F. The snowiest months in Olbernhau are December, November, January, and February, with each month seeing an average of 13 inches of snowfall.