July in Port-Stenli is the rainiest and the coldest month of the year. In July, the weather in Port-Stenli is typically cold. Average daily high temperature in July is about 5 degrees above zero. On average, Port-Stenli has 15 rainy, 13 cloudy, and 3 sunny days in July. The rains are usually light. July as well as February, April, May, and June is considered the most uncomfortable time to visit Port-Stenli.