In June, the weather in Sandnessjoen is typically warm. Average daily high temperature in June is about 11 degrees above zero. On average, Sandnessjoen has 14 rainy, 6 sunny, 5 cloudy, and 5 partly cloudy days in June. The rains are usually heavy. June as well as March, April, May, and September is considered the most uncomfortable time to visit Sandnessjoen.