Zelenogorsk, Russia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Zelenogorsk, Saint Petersburg, Russia, is known for its beautiful beaches along the Gulf of Finland and the Zelenogorsk Park of Culture and Leisure. The best time to travel to Zelenogorsk, Russia, is during the summer months of June to August, when the average air temperature is around 65-70°F (18-21°C) and the water temperature in the Gulf of Finland is approximately 60-64°F (16-18°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!