The northern waters of Belitung experience a seawater quality degradation due to the numerous tin mining activities on Belitung Island. The ocean current simulation in the northern waters of Belitung was conducted throughout the year 2022, and it was carried out using the Delft3D model. Tidal data was obtained from the TMD and applied to the open boundary conditions (Scenario 1), and wind data was sourced from the ECMWF (Scenario 2) were carried out in this study. During spring tide conditions in the east (west) monsoon season, the scenario incorporating both tidal and wind forcing exhibited the highest increase (decrease) in velocity, from 0.105 m/s to 0.120 m/s (0.095 m/s to 0.085 m/s). Moreover, the influence of wind was found to be significant on surface current magnitudes during the west (east) monsoon seasons due to the relatively high wind magnitudes, ranging from 3.5 to 5.5 m/s (3 to 5 m/s) during the west (east) monsoon. However, during the first and second transitional seasons, the impact of wind on surface current magnitudes was minimal due to the lower wind magnitudes, which ranged from 0.7 to 1.5 m/s (1.2 to 1.8 m/s) during the first (second) transitional season.