Abstract. This work aims to evaluate the ocean/waves coupling based on input from the wave modelMFWAM. 1-year coupled runs including seasonal variability has been performed for the IberianBiscay and Ireland domain. We investigated the consequences of improvement in wave physics onthe mixed layer of the ocean with a fine horizontal grid size of 1/36°. The ocean model NEMO andthe wave model MFWAM have been used for this study to prepare the use of coupling operationallyin the IBI Copernicus Marine Service and Monitoring Evironment (CMEMS). Two wave physicsversions have been discussed in this study. The validation of sea surface temperature, surfacecurrents have been implemented in comparison with satellite and in-situ observations. The resultsshow a positive impact of the waves forcing on surface key parameters. For storm cases it has beendemonstrated a good skill of the ocean/wave coupling to capture the peak of surge event such as theone observed for Petra storm.