The Gulf Stream is the primary ocean current that influences the climate of the eastern U.S. coast.

The Gulf Stream is a powerful ocean current that originates in the Gulf of Mexico and flows along the eastern U.S. coast, significantly influencing the region’s climate. This warm current helps moderate temperatures along the coastline, preventing extreme winter cold and contributing to milder weather year-round. Areas like Florida, the Carolinas, and parts of the Northeast benefit from the Gulf Stream's moderating effect, which keeps their winters relatively warm compared to other regions at similar latitudes. The Gulf Stream also plays a role in the area's humidity levels and overall climatic stability.