Ashfield Colborne Wawanosh, Canada offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Ashfield Colborne Wawanosh, Ontario, Canada, is known for Point Farms Provincial Park and its scenic Lake Huron shoreline. The best time to travel to Ashfield Colborne Wawanosh, 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 Lake Huron 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!