Dolbeau Mistassini, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Dolbeau Mistassini is known for the Vieux Moulin, a historic watermill, and the Mistassibi River, popular for kayaking and white-water rafting. The best time to travel to Dolbeau-Mistassini, Canada, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and water temperatures in nearby lakes are approximately 18°C (64°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!