San Lucas AVA

San Lucas AVA sits at the southern end of the Salinas Valley in Monterey County, California. Spanning approximately 10 by 5 miles on a northwest-southeast axis, the appellation is bisected by U.S. Highway 101 and lies between the towns of King City and San Ardo. It is the southernmost AVA enclave in the Salinas Valley, nested within the larger Monterey AVA and the Central Coast AVA. Vineyard elevations range from 350 to 800 feet above sea level, rising from 340 feet at the northern end to 435 feet at the southern end.

• Southernmost AVA enclave in the Salinas Valley
• Located in southern Monterey County between King City and San Ardo
• Bisected by U.S. Highway 101 on a northwest-southeast axis
• Sub-appellation of both the Monterey AVA and the Central Coast AVA

San Lucas experiences a moderate to warm Mediterranean climate, distinguished from northern Monterey regions by reduced fog influence and less wind. It receives less cooling from Monterey Bay, resulting in warmer daytime temperatures. The critical defining characteristic of this AVA is its diurnal temperature variation, the largest of any California AVA, with summer swings of 40 degrees Fahrenheit between day and night. Morning fog gives way to afternoon breezes, and the long, cool evenings extend the growing season considerably. The region falls in the Region 3 to 4 range on the Winkler scale.

• Largest diurnal temperature variation of any California AVA, with 40-degree summer swings
• Warmer and less windy than northern Monterey regions
• Morning fog and afternoon breezes moderate summer heat
• Region 3-4 on the Winkler heat summation scale

The dominant soil type in San Lucas is Lockwood Shaly Loam, complemented by Garey Sandy Loam, Oceano Loamy Sand, and sand and gravel alluvia. The vineyards sit on sandy alluvial fans and terraces with excellent drainage characteristics. Free-draining soils including calcareous chalk rock, loam, and sandstone are also present throughout the appellation. This combination of well-drained, low-fertility soils encourages vines to develop deep root systems, concentrating flavors in the fruit.

• Dominant soil: Lockwood Shaly Loam
• Also present: Garey Sandy Loam, Oceano Loamy Sand, and sand and gravel alluvia
• Calcareous chalk rock, loam, and sandstone contribute to excellent drainage
• Sandy alluvial fans and terraces characterize the vineyard sites

San Lucas grows a diverse range of varieties, with Bordeaux reds leading the way. Cabernet Sauvignon and Merlot dominate, supported by Cabernet Franc, Syrah, Petite Sirah, Grenache, and Mourvèdre. Chardonnay and Sauvignon Blanc represent the key white varieties. The extreme diurnal temperature variation preserves natural acidity while allowing full phenolic ripeness, producing red wines with dark color, complex aromas, mature tannins, and high palate weight. White wines tend toward fruit-driven, tropical profiles. Notable producers include Scheid Vineyards, Lockwood Vineyard, and Almadèn Vineyards.

• Cabernet Sauvignon and Merlot are the dominant red varieties
• Rhône varieties including Syrah, Grenache, and Mourvèdre are also cultivated
• Chardonnay and Sauvignon Blanc lead among whites
• Red wines show dark color, mature tannins, and high palate weight

The land now known as San Lucas AVA was historically cattle-grazing territory. The first wine grape vines were planted in 1970, marking the beginning of a viticultural transformation in the region. By the time of the AVA petition in 1987, approximately 5,000 acres were under cultivation. Almadèn Vineyards led the petition effort, and the AVA received official recognition on March 7, 1987. In 2004, the appellation underwent a boundary realignment when the San Bernabe AVA was established, transferring 1,281 acres out of San Lucas into the new appellation.

• First vines planted in 1970 on land previously used for cattle grazing
• Almadèn Vineyards petitioned for AVA status, granted March 7, 1987
• Approximately 5,000 acres were under vine at the time of the 1987 petition
• 1,281 acres transferred to the new San Bernabe AVA in the 2004 boundary realignment