In March, the weather in Vestmannaeyjar is typically cold. Average daily high temperature in March is about 4 degrees above zero. On average, Vestmannaeyjar has 22 rainy, 4 sunny, 4 cloudy, and 1 partly cloudy day in March. The rains are usually heavy. March as well as January, February, April, and May is considered the most uncomfortable time to visit Vestmannaeyjar.