Agios Ioannis Diakoftis, Greece offers 4 beaches perfect for sunbathing, surfing, swimming, and more. Agios Ioannis Diakoftis is known for its proximity to the famous beaches of Mykonos and the luxurious resorts in the area. The best time to visit Agios Ioannis Diakoftis, Greece, is from late May to early October, with average air temperatures around 75-85°F (24-29°C) and water temperatures ranging from 72-77°F (22-25°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!