<p>Coastal near-inertial waves are usually generated by storms passing offshore and/or nearshore, and modified by the presence of the coast. They can modify coastal currents and upper-layer velocity structures, thereby affecting material transport and ecosystem processes in the coastal region. The propagation characteristics of coastal near-inertial waves (CNIWs) are investigated in this study by using the Regional Ocean Circulation Modelling System (ROMS) model, forced by wind fields incorporating an idealized wind model around the typhoon center and ERA5 wind reanalysis data from ECMWF (European Center of Meteorological Weather Forecasting) beyond the typhoon center, and with realistic bathymetric data near the Guangdong coast, China. Spatial coherence analysis reveals that near-inertial energy propagates shoreward and upward along middle layers, guided by the topography. Near the coast, energy is transmitted offshore due to the presence of the coastal wall. Calculations of energy transport flux and group velocity further elucidate the wave propagation patterns, showing that near-inertial energy propagates onshore during the typhoon passage and offshore afterward. A two-layer structure of energy flux, separated by the thermocline, is identified, with variations observed between successive inertial periods. The sensitivity of CNIWs’ propagation to typhoon parameters is examined through 12 experiments. A 10% increase in maximum wind velocity (<i>V</i>_max), radius of maximum wind (<i>R</i>_max), and typhoon translation speed (<i>U</i>) lead to respective changes in energy flux (−5% to +25%) and group velocity (−1% to +0.4%), highlighting their impacts on the CNIWs’ energy fluxes. This study is of importance to coastal dynamics and disaster management.</p>