Nagano (GI)

Nagano Prefecture sits in central Honshu, a completely landlocked region surrounded by three mountain ranges of the Japanese Alps. The prefecture is home to most of Japan's tallest mountains, and more than 80% of its farmland sits above 500 metres above sea level. Viticulture is concentrated across five named wine valleys: Kikyogahara Wine Valley, Chikumagawa Wine Valley, Japan Alps Wine Valley, Tenryugawa Wine Valley, and Yatsugatake Seiroku Wine Valley, the last of which was added to the scheme in 2023.

• Vineyards planted between 600 and 900 metres above sea level
• Five wine valleys organised under the Shinshu Wine Valley designation
• Completely landlocked, surrounded by the Japanese Alps
• Over 80% of farmland situated above 500 metres elevation

Nagano's high-altitude position creates a cool climate with significant day-night temperature differences that promote sugar accumulation in the grapes while retaining natural acidity. Annual rainfall of around 1,000mm is among the lowest in Japan, and drier summer conditions reduce disease pressure in the vineyard. The growing season from April to October delivers approximately 1,200 cumulative hours of daylight. Soils are predominantly well-drained volcanic and ash-rich formations, with alluvial fans composed of pebbles and sand in key zones. The region falls within the Amerine and Winkler Region 1 to 3 classification.

• Cool climate with pronounced diurnal temperature variation
• Approximately 1,000mm annual rainfall, one of Japan's lowest
• Volcanic, ash-rich, and alluvial fan soils with excellent drainage
• Around 1,200 cumulative daylight hours during the April to October growing season

Nagano is Japan's leading producer of Chardonnay and Merlot, and the cool climate supports a wide range of European varieties including Cabernet Sauvignon, Pinot Noir, Sauvignon Blanc, Cabernet Franc, Pinot Gris, and Riesling. Native and hybrid varieties such as Niagara, Concord, and the local Ryugan are also cultivated. Red wines show deep colour, condensed flavour, well-structured tannins, and moderate acidity. White wines are characterised by expressive aromatics and fresh, lively acidity. Premium bottlings deliver elegant, complex aromas with rich fruit and a deep finish.

• Japan's largest producer of Chardonnay and Merlot grapes
• European varieties dominate, alongside local varieties Niagara, Concord, and Ryugan
• Reds are structured and deeply coloured; whites are aromatic with fresh acidity
• Premium wines show elegant aromatics, thick fruit, and long finishes

Viticulture in Nagano has roots stretching back to 1879, when American grape varieties were first planted in the Yamabe area of Matsumoto. European and American varieties arrived in Kikyogahara in 1890, and the first winery was established in 1902. Merlot cultivation in Kikyogahara began in the 1950s, and a wave of modern winery development began around 2000. The Nagano Appellation Control (NAC) system was established in 2002 to set quality standards. GI Nagano was officially designated on June 30, 2021, making Nagano the third Japanese prefecture after Yamanashi and Hokkaido to receive a wine GI.

• American grapes first planted in Yamabe (Matsumoto) in 1879
• First winery established in 1902
• NAC system established in 2002
• GI status granted June 30, 2021, third prefecture in Japan to receive wine GI designation