Wetter Losheim am See is a municipality in the district of Merzig-Wadern, in Saarland, Germany. It is situated on the shores of the Losheim Reservoir, approximately 20 kilometers southwest of Merzig. As of 2021, the municipality has a population of around 16,000 inhabitants.
The municipality is known for its beautiful natural surroundings, including the Losheim Reservoir, which is a popular destination for swimming, boating, and fishing. The municipality is also home to a number of historical and cultural attractions, including the Losheim Castle, which dates back to the 12th century.