Located along the Atlantic coast, Galicia has a very wet climate with average rainfall of more than 50 inches (1,300 mm) a year. The more than 2000 hours of sunshine that the region receives helps contribute to the high humidity of the area. The Serra dos Ancares mountain range forms the border with Castile and León to the east, and the Miño forms part of the region's border with Portugal to the south. The region's close proximity to Portugal and virtual isolation from the rest of Spain has had a marked influence on the style of wines from Galicia with many of them being closer in style to Portuguese wines than to other Spanish wines.