St. Petersburg, United States offers 3 beaches perfect for sunbathing, surfing, swimming, and more. St. Petersburg, Florida, United States, is known for the Salvador Dali Museum and the St. Pete Pier. The best time to travel to St. Petersburg, United States, is from March to May, with average air temperatures ranging from 70°F to 80°F and water temperatures around 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!