Ateni Katakilou, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Ateni Katakilou is known for its proximity to the ancient ruins of Delos and the vibrant nightlife of Mykonos. The best time to travel to Ateni Katakilou, Greece, is from May to September, with average air temperatures around 75°F (24°C) and water temperatures near 73°F (23°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!