Collaroy, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Collaroy, New South Wales, Australia, is known for its beautiful Collaroy Beach and the historic Collaroy Cinema. The best time to travel to Collaroy, Australia, is from December to February, with average air temperatures around 25°C (77°F) and water temperatures about 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!