July in Hamar is the sunniest and the warmest month of the year. In July, the weather in Hamar is typically warm. Average daily high temperature in July is about 18 degrees above zero. On average, Hamar has 17 rainy, 8 sunny, 5 partly cloudy, and 1 cloudy day in July. The rains are usually moderate. July as well as March, April, May, and August is considered the most uncomfortable time to visit Hamar.