At Sakai-Minato port around west coast of the Sea of Japan, abnormal storm surges have been measured with timing lags of 15 hours after landfall of typhoons. The present study examines the abnormal storm surges due to Typhoon 0314 and 0418 using the SuWAT (Surge-Wave-Tide coupled model) in different meteorological conditions by the WRF (Weather Research and Forecasting model) and an empirical typhoon model proposed by Fujii and Mitsuta. The results of simulations indicate that the abnormal surges forced by the WRF outputs show good agreement with the measurements. Also, this study describes mechanism why the abnormal surges with time lag are generated due to typhoons at the Sakai-Minato Port.