Valais is Switzerland's largest wine-producing canton, located in the upper Rhône Valley in southwestern Switzerland, bordering France and Italy. Vineyards stretch along the Rhône River from Lake Geneva eastward toward Brig, often planted on steep, terraced slopes with strong southern exposure.
The region benefits from one of Switzerlan's driest climates, with abundant sunshine, significant diurnal temperature variation, and Alpine influences that help preserve acidity and aromatic precision. Irrigation systems known as bisses historically carried glacial meltwater to vineyards, shaping the landscape and viticultural tradition.
Valais is particularly known for its white wines made from Chasselas (locally called Fendant), Petite Arvine, Heida (Savagnin Blanc), and Amigne. Red varieties include Pinot Noir, Gamay, Humagne Rouge, and Cornalin, producing structured wines with regional character. Production is predominantly dry, though late-harvest and sweet styles are also made from selected grapes.
Valais wines are classified under the Swiss AOC Valais system, with additional village and vineyard designations reflecting local identity and terroir diversity.