In August, the weather in Egilsstaðir is typically warm. Average daily high temperature in August is about 12 degrees above zero. On average, Egilsstaðir has 14 rainy, 8 cloudy, 7 partly cloudy, and 2 sunny days in August. The rains are usually moderate. August as well as March, April, May, and June is considered the most uncomfortable time to visit Egilsstaðir.