Sonoma County 2021 Vintage Report
Defining the 2021 vintage in Sonoma County requires looking beyond the averages, as it was a year of contrasting fortunes and precise timing.
The cycle began with a harmonious flowering period. Warm days (avg 21°C) allowed for an even fruit set, establishing the potential for a generous crop.
Summer turned up the intensity. With 12 days soaring above 35°C, the vines faced a stress test. Yet, thanks to sufficient water reserves, the canopy remained green, protecting the clusters from sunburn. A key factor was the dramatic diurnal shift (15.3°C), ensuring that despite the daytime warmth, acidities remained razor-sharp.
The season concluded with a pristine harvest window. With negligible rain (10mm), pickers could wait for perfect phenolic maturity, harvesting each block at its absolute zenith.
**Style:** Rich, opulent, and structured wines built for the long haul.
About Sonoma County
Napa's laid-back neighbor, Sonoma is a vast region of microclimates. It excels in cool-climate Pinot Noir and Chardonnay from the coast, as well as robust Zinfandels and Cabernets from its warmer valleys.
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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