Point Boston, Australia offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Point Boston, South Australia, Australia, is known for its proximity to the stunning Coffin Bay National Park and the Eyre Peninsula's pristine beaches. The best time to travel to Point Boston, 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!