Douro Valley 1971 Vintage Report
Defining the 1971 vintage in Douro Valley requires looking beyond the averages, as it was a year of contrasting fortunes and precise timing.
Early challenges emerged with a disrupted flowering phase. 85mm of rain during the bloom caused significant *coulure* (shatter), naturally lowering yields and concentrating the energy into fewer bunches.
The growing season was solar and generous. Accumulating 1748 Growing Degree Days (GDD), the summer provided consistent warmth that drove steady sugar accumulation.
Harvest proceeded under mixed skies, requiring agility to dodge the 48mm of rain that fell sporadically during the picking weeks.
**Style:** Classically proportioned wines with good balance and terroir expression.
About Douro Valley
A UNESCO site of dramatic, terraced slopes along the Douro River. Originally famous for Port, it now produces some of Portugal's most concentrated and elegant dry red wines from indigenous grapes.
Climatic Blueprint
Growing Degree Days (GDD)
Total Rainfall
Sunshine Hours
Diurnal Shift
Frost Days
Average Temperature
Historical Context (10 Years)
Comparison of growing season heat accumulation vs regional average.
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