Base map via the TTB AVA Explorer
On August 30, 2024, the TTB (Alcohol and Tobacco Tax and Trade Bureau) of the United States approved the San Luis Rey American Viticultural Area (AVA). The new AVA is located in California’s San Diego County, entirely within the previously established South Coast AVA. The AVA extends from the coastal city of Oceanside inland to the Merriman Mountains and Moosa Canyon.
The area is named for the San Luis Rey River, which runs through the northern edge of the area and drains into the Pacific Ocean; and for Mission San Luis Rey—founded in 1798 and built close to the banks of the river. The defining characteristics of the San Luis Rey AVA include the area’s topography, climate, and soil. These features are discussed below.
Topography and Climate: The San Luis Rey AVA sits at relatively low elevations (the mean elevation is 563 feet above sea level) and is located close to the Pacific Coastline. This situation allows cool ocean breezes to flow through the region, thus creating an overall cool, maritime climate. The average annual maximum temperature of the San Luis Rey AVA is significantly cooler than the surrounding areas (including the Temecula Valley AVA, San Pasqual Valley AVA, and Ramona Valley AVA).
Base map via the TTB AVA Explorer
Soil: Compared with the surrounding area, the bedrock supporting the San Luis Rey AVA is generally older and richer in sandy loam (an ideal texture for commercial viticulture, and a point of differentiation and potential advantage over much of the rest of the South Coast AVA). Soil parent materials include granite, sandstone and quartz.
The San Luis Rey AVA covers a total of approximately 97,733 acres, with 256 acres currently planted to vineyards (with another 29 acres of planned vineyards). There are 44 commercial vineyards and just over 20 bonded wineries—including Fallbrook Winery and Lionsgate Estate Winery—located within the region. The leading grape varieties include Cabernet Sauvignon, Merlot, Cabernet Franc, Syrah, and Grenache.
When the San Luis Rey AVA is brought into force—on September 30, 2024—the total number of AVAs in the United States will be 274. Of these, 153 will be in California.
Welcome to the world, San Luis Rey AVA!
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Post authored by Jane A. Nickles…your blog administrator: jnickles@societyofwineeducators.org