Koumelas, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Koumelas is known for its picturesque landscapes and traditional Cycladic architecture. The best time to travel to Koumelas, Greece, is from late May to early October, with average air temperatures ranging from 75°F to 85°F and water temperatures around 72°F to 77°F. Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!