Austinmer, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Austinmer is known for Austinmer Beach and the scenic views from Sublime Point Lookout. The best time to travel to Austinmer, 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!