Kassiopi, Greece offers 10 beaches perfect for sunbathing, surfing, swimming, and more. Kassiopi is known for its picturesque harbor, Kassiopi Castle, and beautiful beaches like Bataria and Kanoni. The best time to travel to Kassiopi, Greece, is from June to September, when the average air temperature is around 80°F (27°C) and the water temperature is approximately 77°F (25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!