April in Bronnoysund is the rainiest month of the year. In April, the weather in Bronnoysund is typically cold. Average daily high temperature in April is about 4 degrees above zero. On average, Bronnoysund has 24 rainy, 5 sunny, and 1 cloudy day in April. The rains are usually heavy. April as well as March, May, June, and September is considered the most uncomfortable time to visit Bronnoysund.