TALOS wave energy converter is a point absorber proposed at Lancaster University (UK), with its main advantage being its ability to absorb energy from all motion modes (i.e. multi-axis Power-Take-Off system). Following previous computational studies in the frame of device development (including frequency-domain modelling), here we present a motion study response for the TALOS wave energy converter for selected wave climates. The analysis applies to realistic irregular wave conditions, assuming a semi-empirical spectrum representative of chosen wave climates, and hydrodynamic modelling is combined with Copernicus Marine Service wave reanalyses data. After scatter plots of significant wave height and energy period are prepared, future considerations are discussed for the device size adjustments under different wave climates