Gemlik, Turkey offers 1 beach perfect for sunbathing, surfing, swimming, and more. Gemlik is known for its olive production and beautiful coastal views. The best time to travel to Gemlik, Turkey, is from May to September, when the average air temperature is around 25°C (77°F) and the water temperature is approximately 22°C (72°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!