Carlsbad, United States offers 14 beaches perfect for sunbathing, surfing, swimming, and more. Carlsbad is known for LEGOLAND California Resort and the Flower Fields. The best time to travel to Carlsbad, United States, is from May to October, with average air temperatures ranging from 60°F to 75°F and water temperatures around 65°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!