If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Bad Haering: 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 30°F. The rainiest months in Bad Haering are May, June, July, and August, with each month seeing an average of 8 inches of rainfall.