The surface ocean current that affects the climate of Eureka is known as the California current. It is a Pacific ocean current and moves southwards along the western coast of America. It rises off southern British Columbia and ends off southern Baja. It is one of the five major coastal currents and is linked to the upwelling zones. The other Pacific currents are the Humboldt Current, the Benguela Current, the Canary Current, and the Somali Current. The California Current is also known as an Eastern boundary current. This is a large swirling current that occupies the northern part of the Pacific.