Nelson, Australia offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Nelson, New South Wales, Australia, is known for its stunning beaches and proximity to the Myall Lakes National Park. The best time to travel to Nelson, Australia, is during the summer months of December to February, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 21°C (70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!