Climate
Topographically, the region is "a vast amphitheater which, starting at the coast, gradually climbs in elevation towards the interior" (Amorim Girão, Portuguese geographer), exposing the entire area to the influence of the Atlantic Ocean, a phenomenon reinforced by the orientation of the valleys of the main rivers, which run east to west and facilitate penetration of the sea winds. This Atlantic influence, mostly granitic soils, mild climate and high rainfall, are reflected in the freshness, lightness and elegance of the wines of this region.