San Luis Rey AVA
| Wine region | |
| Type | American Viticultural Area |
|---|---|
| Year established | 2024 |
| Years of wine industry | 228 |
| Country | United States |
| Part of | California, South Coast AVA, San Diego County |
| Other regions in California, South Coast AVA, San Diego County | Ramona Valley AVA, San Pasqual Valley AVA |
| Climate region | Region I-V |
| Heat units | 3849 GDD |
| Precipitation (annual average) | 14.27 in (362.46 mm) |
| Soil conditions | Alfisols series, gravelly and fine sandy loam derived from granitic rock |
| Total area | 97,733 acres (153 sq mi) |
| Size of planted vineyards | 256 acres (104 ha) |
| No. of vineyards | 44 |
| Grapes produced | Albariño, Cabernet Franc, Cabernet Sauvignon, Chardonnay, Grenache, Malbec, Merlot, Sangiovese, Syrah, Tempranillo |
| No. of wineries | 23 |
San Luis Rey is an American Viticultural Area (AVA) located in San Diego County, California, within the vast 3.25-million-acre (5,078 sq mi) multi-county South Coast AVA. It extends from the coastal town of Oceanside inland to the Merriam Mountains and Moosa Canyon. The wine appellation was established as the nation's 274th, the state's 153rd and the county's fourth AVA on August 30, 2024 by the Alcohol and Tobacco Tax and Trade Bureau (TTB), Treasury after reviewing the petition submitted by Rebecca Wood, managing member of Premium Vintners LLC, on behalf of Fallbrook Winery and other local vineyard owners and winemakers proposing the viticultural area named "San Luis Rey." There are 44 commercially producing vineyards cultivating approximately 256 acres (104 ha), along with 29 acres (12 ha) of planned vineyards and 23 wineries within the AVA. According to the petition, the distinguishing features of San Luis Rey AVA are its topography, climate and soils.