Seabeck, United States offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Seabeck, Washington, United States, is known for the Seabeck Conference Center and its proximity to the scenic Hood Canal and Olympic Mountains. The best time to travel to Seabeck, United States, is during the summer months of June to August, when the average air temperature is around 70-75°F and the water temperature is approximately 55-60°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!