July in Narvik is the warmest month of the year. In July, the weather in Narvik is typically warm. Average daily high temperature in July is about 13 degrees above zero. On average, Narvik has 21 rainy, 6 sunny, 3 partly cloudy, and 1 cloudy day in July. The rains are usually heavy. July as well as May, June, August, and September is considered the most uncomfortable time to visit Narvik.