Oldsmar, United States offers 2 beaches perfect for sunbathing, surfing, swimming, and more. Oldsmar, Florida, United States, is known for the Oldsmar BMX Supercross Track and the annual Oldsmar Days and Nights festival. The best time to travel to Oldsmar, United States, is from March to May, when the average air temperature is around 70-80°F and the water temperature is approximately 70°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!