Granite, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Granite, Colorado, United States, is known for its proximity to the Arkansas River, which offers popular whitewater rafting and kayaking opportunities. The best time to travel to Granite, United States, is during the summer months of June to August, when the average air temperature is around 70-85°F and water temperatures in nearby lakes and rivers are typically between 60-70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!