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Portugal — Wine Region Guide

Dajeong Lim M.D.
DipWSET · CMS Advanced Sommelier (Leslie Rudd Award 2024) · FWS · IWS · SWS
Wine educator of PDT Seoul · Editor of YourOwnWineEncyclopedia.com · Last reviewed June 2026

The Portugal maps from Your Own Wine Encyclopedia — every name tag opens a study card. Below, the chapter's own geography, climate and geology notes.

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Portugal — Mainland · Mainland North · Mainland Centre · Mainland South · +14 more
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Portugal · Overview
Portugal. Vinho Verde and the Douro in the north, Dão and Bairrada in the centre, Lisboa, Tejo, Setúbal and Alentejo south.

From the encyclopedia — geography, climate & geology

Climate & Topography (4 Geographic Zones)

  • Coast (W, maritime): Regions: Lisboa, Bairrada
    • Between Lisbon–Porto, continental shelf nearly disappears → one of Europe's deepest/coldest coastlines
    • Constant cold humid air, morning fog; mountains to east trap moisture
    • North of Porto: shelf extends → slightly weaker maritime influence on Vinho Verde, but higher mountains = extreme rain shadow = one of Europe's wettest growing regions
  • Mountains (N interior, continental): Regions: Douro, Dão, Trás-os-Montes, Beira Interior
    • Giant granitic mountains, schist at lower elevations; vineyards >1,000 m
    • Extremely poor soils; large diurnal swings
  • Savannah (S of Tagus, Mediterranean): Regions: Alentejo, Tejo, Setúbal, Algarve
    • Rolling plains, rich red clay; diverse agriculture (grains, cork, livestock)
    • Hot summers but large diurnal shifts (22–28°C difference)
  • Islands (extreme maritime): Madeira, Açores
    • Volcanic soils; temperate (10–25°C), long growing seasons
Read the full Portugal chapter

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