Nullaki, Australia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nullaki, Western Australia, Australia, is known for the Nullaki Peninsula and its proximity to the scenic attractions of the Great Southern region, including the Bibbulmun Track and the pristine beaches of the Southern Ocean. The best time to travel to Nullaki, 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 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!