Saint Clair, United States offers 1 beach perfect for sunbathing, surfing, swimming, and more. Saint Clair, Missouri, United States, is known for its proximity to the scenic Meramec Caverns and the historic Route 66. The best time to travel to Saint Clair, United States, is during late spring to early fall (May to September) when the average air temperature ranges from 60°F to 80°F and water temperature is around 60°F to 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
