Sulak, Russia offers 1 beach perfect for sunbathing, surfing, swimming, and more. Sulak, Dagestan, Russia, is known for the Sulak Canyon, one of the deepest canyons in the world. The best time to travel to Sulak, Russia, is during the summer months of June to August, when the average air temperature is around 20-25°C (68-77°F) and the water temperature in the Caspian Sea is approximately 22-24°C (72-75°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!