Merewether, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Merewether is known for its beautiful beaches and vibrant surfing culture. The best time to travel to Merewether, Australia, is from November to April, with average air temperatures around 20-28°C (68-82°F) and water temperatures ranging from 20-24°C (68-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!