Happy Valley, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Happy Valley, Queensland, Australia, is known for its proximity to Fraser Island, a UNESCO World Heritage site. The best time to travel to Happy Valley, 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!