Abstract : Bedono Village of Sayung District belongs to Demak Regency and is situated on the northern coast of Central Java Province. This area has many rivers and other important habitats: mangrove forests and silty-clay beaches. These rivers transport sediment to the waters of Bedono. With the development, the construction of the Port of Semarang causes changes in current and sediment transportation patterns, leading to erosion and deposition of sediments in various areas in the waters of Demak. Therefore, it is crucial to study hydrodynamics and sedimentation characteristics in managing coastal resources in the region. The present research aims to model the hydrodynamics characteristics (current speed and directions) using oceanographic data on waves, tides, and bathymetry. The study was conducted between May and December 2017. The results showed that the wave height was between 0.5 - 1.25 m with an average wave height of 0.5 -0.79 m and the direction of the wave blowing west-east following the current season. The average current speed in the western season is 5-15 cm s-1, and the average current speed in the east season is 5.9-8.8 cm s-1 with the direction of the current following the wind and the prevailing current. The average tidal height that occurs in the waters of Bedono Demak is an average tidal height of 0.6 m, with the highest tide of 0.9 m and the lowest of 0.3 m. The dominant sediment characteristic is dominated by silt and clay.