Northdown, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Northdown is known for its proximity to the Narawntapu National Park, a popular destination for wildlife enthusiasts and nature lovers. The best time to travel to Northdown, Australia, is during the summer months of December to February, when the average air temperature is around 20-25°C (68-77°F) and the water temperature is approximately 18-20°C (64-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!