In August, the weather in Beitostolen is typically warm. Average daily high temperature in August is about 13 degrees above zero. On average, Beitostolen has 18 rainy, 6 partly cloudy, 4 cloudy, and 3 sunny days in August. The rains are usually heavy. August as well as May, June, July, and September is considered the most uncomfortable time to visit Beitostolen.