Volcano, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Volcano, Hawaii, United States, is known for Hawaii Volcanoes National Park. The best time to travel to Volcano, United States, is during the summer months of June to August, when the average air temperature is around 75°F (24°C) and water temperatures in nearby lakes are approximately 70°F (21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!