If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Schoppernau: The hottest months are usually August and July, with an average temperature of 11°C, while the coldest months are January and February, with an average of -5°C. The rainiest months in Schoppernau are August, June, July and May, with each month seeing an average of 187 mm of rainfall.