Dutton Dunwich, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Dutton Dunwich, Ontario, Canada, is known for its picturesque rural landscapes and proximity to Lake Erie, offering outdoor recreational activities and charming small-town experiences. The best time to travel to Dutton Dunwich, Canada, is during the summer months of June to August, when the average air temperature is around 20-25°C (68-77°F) and the water temperature in nearby lakes is approximately 18-22°C (64-72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!