July in Iles de la Madeleine is the warmest month of the year. In July, the weather in Iles de la Madeleine is typically warm. Average daily high temperature in July is about 20 degrees above zero. On average, Iles de la Madeleine has 17 rainy, 8 sunny, 4 partly cloudy, and 2 cloudy days in July. The rains are usually heavy.