Wedge Island, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Wedge Island, Western Australia, Australia, is known for its pristine beaches and the iconic Wedge Island shacks. The best time to travel to Wedge Island, Australia, is from November to March, with average air temperatures around 25°C (77°F) and water temperatures approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!