March in Bronnoysund is the cloudiest month of the year. In March, the weather in Bronnoysund is typically cold. Average daily high temperature in March is about 1 degree above zero. On average, Bronnoysund has 23 rainy, 4 sunny, 3 snowy, and 1 partly cloudy day in March. The rains are usually heavy. March as well as April, May, June, and September is considered the most uncomfortable time to visit Bronnoysund.