Vela Luka, Croatia offers 13 beaches perfect for sunbathing, surfing, swimming, and more. Vela Luka is known for the Vela Spila archaeological site and the annual Vela Luka Summer Festival. The best time to travel to Vela Luka, Croatia, is from June to September, when the average air temperature is around 77°F (25°C) and the sea 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!