Lake Cathie, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Lake Cathie is known for its tranquil coastal lagoon and beautiful beaches, making it a popular destination for beach tourism. The best time to visit Lake Cathie, Australia, is from December to February, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 22-24°C (72-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!