Gnarabup, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Gnarabup is known for its proximity to the stunning Margaret River region and the popular Gnarabup Beach. The best time to travel to Gnarabup, Australia, is from November to March, with average air temperatures around 25°C (77°F) and water temperatures around 20°C (68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!