July weather forecast in Keflavík

In July, the weather in Keflavík is typically warm. Average daily high temperature in July is about 11 degrees above zero. On average, Keflavík has 14 rainy, 6 sunny, 6 cloudy, and 5 partly cloudy days in July. The rains are usually heavy. July as well as January, February, March, and April is considered the most uncomfortable time to visit Keflavík.