Koutalas, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Koutalas is known for its proximity to the historic island of Delos and the beautiful beaches of Mykonos. The best time to travel to Koutalas, Greece, is from May to September, with average air temperatures ranging from 75°F to 85°F and water temperatures from 72°F to 79°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!