Nampa, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Nampa is not typically known for travel and beach tourism. The best time to travel to Nampa, United States, is in late spring or early fall when the average air temperature is around 70°F (21°C) and water temperatures in nearby lakes and rivers are typically in the mid-60s°F (around 18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!