Loutra Killinis, Greece offers 3 beaches perfect for sunbathing, surfing, swimming, and more. Loutra Killinis is known for its luxurious thermal spa resorts and beautiful sandy beaches. The best time to travel to Loutra Killinis, Greece, is from late May to early October, with average air temperatures around 75-85°F (24-29°C) and water temperatures around 72-79°F (22-26°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!