In August, the weather in Berchtesgaden is typically warm. Average daily high temperature in August is about 21 degrees above zero. On average, Berchtesgaden has 19 rainy, 7 sunny, 4 partly cloudy, and 1 cloudy day in August. The rains are usually heavy. August as well as January, February, March, and April is considered the most uncomfortable time to visit Berchtesgaden.