Using 1.3 103 for CD gives a tendency to underestimate the sea surface anomaly, while using 2.5 103 was overestimated. It can be seen that the values from using CD depending on the wind speed close to the observation. From the results, it may be concluded that the drag coefficient is reasonably taken for the calculation of storm surges in this research as CD depending on the wind speed due to Mathias and Godfrey [16], and the sea surface elevation is substantially affected by the change of the drag coefficient. The value of drag coefficient can enhance or reduce the magnitude of the storm surge elevation.