Harstine, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Harstine, Washington, United States, is known for its serene natural beauty and outdoor recreational opportunities, particularly within Harstine Island State Park. The best time to travel to Harstine, United States, is during the summer months of June to August, when the average air temperature is around 70°F (21°C) and the water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
