Sosnovy Bor, Russia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sosnovy Bor is known for the Leningrad Nuclear Power Plant and its proximity to the Gulf of Finland. The best time to travel to Sosnovy Bor, Russia, is during the summer months of 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 approximately 15-20°C (59-68°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!