Ocean Currents That Shape London's Climate

Gulf Stream

Powerful warm current from the Gulf of Mexico across the Atlantic; transports tropical heat to the North Atlantic, giving London mild, wet winters and cool summers.

North Atlantic Drift

Eastern extension of the Gulf Stream along Europe's coast; directly bathes the British Isles in warm, moist air, reinforcing the maritime climate.

Together, these currents make London's climate far milder than other cities at similar latitude (e.g., Calgary, Irkutsk).