Automatic eddy identification based on satellite altimetry and sea surface temperature (SST) data are used to quantify the impact of mesoscale eddies on the SST anomalies in the North Pacific Ocean. The spatial distribution of SST anomalies in cyclonic (CE) and anticyclonic eddies (AE) is significantly heterogeneous. The anomalies of SST are mostly positive in the AE and negative or close to zero in CE. The magnitudes of the anomalies are significantly higher in AE than in CE. The maximum values of the anomalies are observed in the rings of Kuroshio and near the Aleutian and Kuril Islands. It is shown that on average SST anomalies are constantly decreasing during eddy's lifetime from 0.12° to 0.08°C in AE and from -0.02° to 0°C in CE, which is probably related to the divergent movements or trapping of water masses at the time of vortex formation. There is a direct relationship between the orbital velocity of vortices and SST anomalies since the largest anomalies are observed in the most intensive vortices. The composite analysis is used to compute the average distribution of SST anomaly in CE and AE, which shows that the main effect of the vortices is related to horizontal advection by eddy orbital velocities.