La Jolla, United States offers 13 beaches perfect for sunbathing, surfing, swimming, and more. La Jolla, California, United States, is known for the Scripps Institution of Oceanography, La Jolla Cove, and the Birch Aquarium. The best time to travel to La Jolla is from September to November, with average air temperatures around 70°F (21°C) and water temperatures ranging from 66°F to 70°F (19°C to 21°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!