We analyzed the characteristics of wind speed and direction, and the general patterns of lake-land breezes as well as the process of typical events, based on wind profiling radar data near the Poyang Lake from June 2021 to May 2023. Main conclusions are as follows: (1) The surface-layer wind speed was generally higher in daytime than in nighttime. The prevailing wind direction was northeast in summer, and was southwest in other seasons. The vertical wind profile conformed to the power law, with the wind profile index in a decreasing order as summer (0.41) > spring (0.29) > winter (0.26) > autumn (0.23). (2) A total of 104 lake-land breezes (14.3%) occurred in the study period, most (38 times) in summer, second in autumn (24 times), third in spring (22 times), and least (20 times) in winter. The lake breezes were longer-lasting and started earlier in spring and summer than in autumn and winter, while the opposite is true for the land breezes. When no land-lake breezes occurred, the southwest winds persisted throughout the day and night, and the wind profile index was 0.31. The surface-layer wind speed was generally lower when lake-land breezes occurred. The wind profile index was 0.57 with the northeast winds prevailing between 6:00–18:00. (3) Lake breezes in general peaked at 14:00 with a maximum height of 440 m, whereas land breezes in general peaked at midnight with a maximum height of 760 m. The seasonally varying patterns in lake-land breezes were related to changing water surfaces and contrasting land-water temperatures of the Poyang Lake. This paper provides preliminary conclusions for understanding the potential role of seasonally flooding lakes in local atmospheric circulation and boundary layer structure.