Portugal’s Wine Output Drops 14% to 5.9 Million Hectoliters Amid Unstable Weather

Wine production in Portugal fell by 14 percent during the 2025/2026 season, reaching a total of 5.9 million hectoliters, according to data released by the Instituto da Vinha e do Vinho (IVV), the country’s official wine institute. The figures, based on harvest and production declarations submitted by producers, show a significant drop compared to the previous season.

The decline was not uniform across all regions. The Douro Valley, one of Portugal’s most renowned wine areas, experienced the largest decrease with a 34 percent reduction in output. Other regions with notable declines include the Algarve and Alentejo, both down by 20 percent, and Trás-os-Montes, which saw an 18 percent drop. In contrast, the Azores recorded a remarkable increase of 221 percent in production volume, while Beira Interior posted a modest rise of 2 percent.

The IVV attributed the overall decrease to unstable weather conditions during the growing season. Heavy rainfall and mild temperatures in spring created favorable conditions for fungal diseases, which affected grape yields in several key regions. When compared to the average of the previous five seasons, this year’s production is down by 16 percent.

Despite the lower output, quality classifications remained high. Wines eligible for Protected Designation of Origin (DOP) and Protected Geographical Indication (IGP) status accounted for 91 percent of total national production. Red wines made up the majority of output at 53.9 percent. White wines represented more than 2.3 million hectoliters or 39.4 percent of total production, while rosé wines accounted for 6.7 percent.

The IVV’s report highlights how climate variability continues to challenge wine producers across Portugal. While some regions managed to increase their harvests, most faced difficult conditions that led to reduced yields. The data underscores ongoing concerns about weather patterns and their impact on agriculture in southern Europe.

Portugal remains one of Europe’s leading wine producers, known for its diverse range of styles and grape varieties. The latest figures from the IVV will be closely watched by industry professionals as they assess market trends and prepare for future harvests under increasingly unpredictable climate conditions.