July in Cagnes-sur-Mer is the sunniest month of the year. In July, the weather in Cagnes-sur-Mer is typically warm. Average daily high temperature in July is about 25 degrees above zero. On average, Cagnes-sur-Mer has 31 sunny days in July. July as well as June, August, and September is considered the most comfortable time to visit Cagnes-sur-Mer.