Double Bay, Australia offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Double Bay is known for its upscale shopping, fine dining, and the iconic InterContinental Sydney Double Bay hotel. The best time to visit Double Bay, Australia, is from December to February, with average air temperatures around 75°F (24°C) and water temperatures near 72°F (22°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!