Mondayong, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Mondayong, New South Wales, Australia, is known for its proximity to the Murramarang National Park and the scenic beaches of the South Coast. The best time to travel to Mondayong, 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!