August in Gjovik is the rainiest month of the year. In August, the weather in Gjovik is typically warm. Average daily high temperature in August is about 16 degrees above zero. On average, Gjovik has 20 rainy, 7 sunny, and 4 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 Gjovik.