Promising 2024 California Wine Grape Harvest

The 2024 California wine grape harvest got off to an early start in many regions following a rainy winter, a cool spring, and a warm summer. While some appellations experienced late-season weather events that led to reduced yields, vintners across the state are reporting a high-quality vintage for 2024. Many wine growers utilized innovative approaches to leverage opportunities and address challenges during this fast-paced growing season and harvest.

California produces about 80% of the nation’s wine, making it the world’s fourth-largest wine producing region. The state’s nearly 6,000 wine grape growers produce more than 100 varieties grown in 154 distinctive American Viticultural Areas throughout the state.

Winemaker and Vintner Comments on California’s Growing Season and Harvest

John Kane, General Manager of Bonterra Organic Estates in Ukiah, reported a wet winter in Mendocino County, followed by a cold spring. As the season progressed, summer heat accelerated growth and brought the vines up to speed. Picking began on Aug. 7 and finished in mid-October after a compressed harvest. “Typically, our harvest extends into November,” he says, “so finishing before Halloween marks a shift.”

Red grape clusters were smaller this year, resulting in highly concentrated color and a clean, fruit-forward profile. “The earlier harvest has also led to higher acid levels,” Kane adds, “indicating strong aging potential for the 2024 vintage.”

In Napa Valley, vintners also experienced abundant winter rains.

“The weather conditions were ideal through bloom, which helped set a healthy crop,” says Renée Ary, VP of winemaking at Duckhorn Vineyards in St. Helena. Temperatures were above average in June and July, she said, and harvest began Aug. 14. Weather conditions remained moderate through September, which allowed sugars and flavors to stay in balance. Early October heat triggered a quick finish to the harvest.

“I am seeing beautiful, deeply colored Cabernet Sauvignon and Merlot backed with concentrated fruit, pillowy tannins and bright acids,” Ary adds. “We had very little pyrazines this vintage, which was helpful when navigating the heat.”

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