Vashon, United States offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Vashon is known for its scenic beauty, vibrant arts community, and charming small-town atmosphere. The best time to travel to Vashon, United States, is during the summer months of July and 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!