In August, the weather in Oberstdorf is typically warm. Average daily high temperature in August is about 19 degrees above zero. On average, Oberstdorf has 20 rainy, 6 sunny, 3 cloudy, and 2 partly cloudy days in August. The rains are usually heavy. August as well as March, April, May, and June is considered the most uncomfortable time to visit Oberstdorf.