SOUTHERN CALIFORNIA'S CENTRAL COAST
San Luis Obispo and Santa Barbara counties make up the southernmost district of the Central Coast American Viticultural Area, AVA. There are 27,600 acres of wine grapes planted in San Luis Obispo County and 16,600 acres planted in Santa Barbara County, totaling more than 44,000 acres. Together they make up 7.4 percent of the total state winegrape crush. The number one wine grape variety in San Luis Obispo County is Cabernet Sauvignon with 8,600 acres. Merlot is second with 4,200 acres. There are about 110 wineries in the County. In Santa Barbara County, Chardonnay is the predominant grape with 7,100 acres, and Pinot Noir follows with 3,200 acres. There are almost 90 wineries.
The city of Paso Robles, situated 20 miles inland from the Pacific Ocean, is in San Luis Obispo County, halfway between San Francisco and Los Angeles. The area is characterized by warm, clear days, generally unencumbered by clouds, fog or severe winds. Nighttime temperatures drop by approximately 40 degrees, cooled by a marine layer that moves over the region after sunset. Proximity to the ocean, orientation of the numerous canyons and valleys, and varying elevations produce diverse macroclimates, allowing production of both cool and warm loving winegrape varieties. There are four general soil associations, primarily formed from the weathering of granite, serpentine, shale and sandstone.
In Santa Barbara County, the north-south coastal range of mountains abruptly turns to run almost east-west for 50 miles, framing the valleys in a unique transit to the Pacific Ocean. This is the only stretch of land from Alaska to Cape Horn constituting an east-west traverse. The unique topography allows the flow of fog and ocean breezes to shape distinct microclimates and makes the region one of the coolest viticultural areas in California. However, warmer daytime temperatures in the inland areas allow a wide variety of winegrapes to be grown. Terrain and climates vary widely, from steep, wind-swept hillsides to rolling inland valley vineyards where summer temperatures often reach the century mark.
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