Koukounaries, Greece offers 5 beaches perfect for sunbathing, surfing, swimming, and more. Koukounaries, Thessaly, Greece, is known for its stunning Koukounaries Beach, often considered one of the best beaches in Greece. The best time to travel to Koukounaries, Greece, is from June to September, when the average air temperature is around 77°F (25°C) and the water temperature is approximately 75°F (24°C). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!