Sussex Inlet, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sussex Inlet is known for its serene waterways and outdoor recreational activities. The best time to travel to Sussex Inlet, 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 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!