Oceanic climate (Cfb in Köppen) is characterised by the moderating influence of the sea: mild winters (>0 °C mean), cool summers (<22 °C), frequent rain (800–2,000 mm annually), and abundant cloud cover. It has no marked dry season.
In Spain
It dominates in Galicia, Asturias, Cantabria, the Basque Country, and the northern Pyrenees — "Green Spain". It is the Peninsula's wettest zone (Santiago: ~1,800 mm/year). Permanently green pastures support extensive livestock farming. Annual temperature range is small (8–12 °C) compared to the interior (18–22 °C).