Metchosin, Canada offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Metchosin, British Columbia, Canada, is known for Witty's Lagoon Regional Park and the Galloping Goose Regional Trail. The best time to travel to Metchosin, Canada, is during the summer months of June to August, when the average air temperature is around 20°C (68°F) and the water temperature is approximately 14°C (57°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!