Foster City, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Foster City is known for its scenic lagoons and the Leo J. Ryan Park. The best time to travel to Foster City is from June to September, with average air temperatures around 70-80°F and water temperatures around 60-65°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!
