Saint Helens Beach, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saint Helens Beach, Queensland, Australia, is known for its proximity to the Great Barrier Reef and the Whitsunday Islands. The best time to visit Saint Helens Beach, Australia, is from May to September, with average air temperatures around 20-25°C (68-77°F) and water temperatures 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!