Mattawa, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Mattawa is known for its proximity to the Columbia River, offering scenic views and outdoor recreational activities. The best time to travel to Mattawa, United States, is during the summer months of June to August, when the average air temperature ranges from 70°F to 90°F (21°C to 32°C) and the Columbia River water temperature is typically around 65°F to 75°F (18°C to 24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
