Noctilucent clouds are sensitive indicators of upper mesospheric conditions like temperature and water vapor. Unlike the northern hemisphere, little evidence existed for their presence in southern mid-latitudes. Using Rayleigh lidar in southern Argentina (53.8°S) from 2017 to 2024, noctilucent clouds were detected mainly in the morning at an average height of 83.3 km between late November and late January. Potential links to tides, planetary waves, the solar cycle, and other factors are explored.