Sankt Peterburg, Russia offers 7 beaches perfect for sunbathing, surfing, swimming, and more. Saint Petersburg is known for its stunning architecture, including the Hermitage Museum and the Winter Palace. The best time to travel to Sankt Peterburg, Russia, is from June to August, when the average air temperature is around 18-22°C (64-72°F) and the water temperature in the Gulf of Finland is about 16-20°C (61-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!