Colton, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Colton, South Australia, Australia, is known for the Eyre Peninsula's scenic landscapes and proximity to the Great Australian Bight. The best time to travel to Colton, 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 21°C (70°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!