December in Akranes is the coldest month of the year. In December, the weather in Akranes is typically cold. Average daily high temperature in December is about 1 degree above zero. On average, Akranes has 19 rainy, 5 sunny, 3 snowy, 3 partly cloudy, and 1 cloudy day in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Akranes.