Mopaano, Indonesia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nelson, New South Wales, Australia, is known for the Myall Lakes National Park and the Port Stephens area. The best time to travel to Mopaano, Indonesia, is from May to September, with average air temperatures around 27°C (81°F) and water temperatures near 28°C (82°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!