Duncans Cove, Canada offers 1 beach perfect for sunbathing, surfing, swimming, and more. Duncans Cove is known for its scenic coastal hiking trails and dramatic ocean views. The best time to visit Duncans Cove, Canada, is from June to September, with average air temperatures around 15-20°C (59-68°F) and water temperatures around 10-15°C (50-59°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!