Koyonsaari, Russia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Koyonsaari is known for its picturesque landscapes and the Koyonsaari Island, a popular destination for nature enthusiasts and campers. The best time to travel to Koyonsaari, Russia, is during the summer months of June to August, when the average air temperature is around 60-70°F (15-21°C) and the water temperature is approximately 60°F (16°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!