Sept Iles, Canada offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Sept Iles is known for its proximity to the Mingan Archipelago National Park Reserve and the Sept-Iles Archipelago. The best time to travel to Sept-Iles, Canada, is from June to August, when the average air temperature is around 60-70°F (15-21°C) and the water temperature is approximately 50-60°F (10-15°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!