Kosedere, Turkey offers 1 beach perfect for sunbathing, surfing, swimming, and more. Kosedere is known for its proximity to the ancient city of Ephesus and the House of the Virgin Mary. The best time to travel to Kosedere, Turkey, is from June to September, when the average air temperature is around 25-30°C (77-86°F) and the water temperature is approximately 24-27°C (75-81°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!