Caldwell, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Caldwell, Idaho, United States, is known for its vibrant Indian Creek Plaza, which hosts numerous events and festivals throughout the year. The best time to travel to Caldwell, United States, is in late spring (May), when the average air temperature is around 70°F (21°C) and the water temperature in nearby lakes 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!