Sekiu, United States offers 8 beaches perfect for sunbathing, surfing, swimming, and more. Sekiu, Washington, United States, is known for its proximity to the Olympic National Park and the Strait of Juan de Fuca, making it a popular destination for outdoor activities like fishing and whale watching. The best time to travel to Sekiu, United States, is during the summer months of July and August, when the average air temperature is around 65°F (18°C) and the water temperature is approximately 55°F (13°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!