This study employing the Delft3D numerical model investigated the Mekong Delta’s seasonal current dynamics, simulating its hydrodynamic regime in 2019. Using Nash-Sutcliffe Efficiency and Root Mean Square Error metrics, the model’s accuracy in replicating measured water levels (cm) and currents at various stations was validated, achieving acceptable simulation results. This allowed for reliable analysis of the delta’s current patterns. The study revealed that while the overall direction and peak