Leucate is a commune in the Aude department in southern France. It lies between the Mediterranean Sea and the lagoon Étang de Leucate. L…Leucate is a commune in the Aude department in southern France. It lies between the Mediterranean Sea and the lagoon Étang de Leucate. Leucate is on the Mediterranean coast of France. It is part of the eastern Corbières Massif, which are called the Corbières maritimes. It is around 30 km south of Narbonne, and around 30 km north of Perpignan.