Our Appellation
Varietals
Due to its proximity to San Pablo bay (see CLIMATE), the temperature range in this AVA has the ability to produce both crisp, balanced sparkling wines and rich, earthy Merlots and Pinots. As you can see in the graph below, Chardonnay and Pinot Noir grapes grow especially well in this region and make up the majority of the varietals grown here.
Acres by Variety
Climate
The location of the AVA next to the Napa River and close to the San Pablo bay has a direct influence on the climate of the area.
Located between one and four miles along the San Pablo Bay, this is one of the coolest AVAs in the area, producing crisp Chardonnays and acidic Pinot Noirs. Elevations of most vineyards in this area can range from 400 ft. in the foothills to near sea level by the bay. Afternoon breezes coming off the bay are cool and often quite strong. Daytime temperatures rarely break 80 degrees.
Carneros doesn’t get much rain, about 18-27 inches in typical, non-drought years. Only four or five of those inches come during the growing season, mostly during spring.
Terroir
Carneros AVA soils are primarily clay. There is variation in soil from place to place within the AVA, but the predominant soil is called Haire-Coombs.
Beneath the topsoil, the clay has been compressed into a thick, impenetrable hard pan. Think of it as concrete. Vine roots can’t usually force their way through it. Close to the bay, the water table is also too saline for vines.
While irrigation is necessary during summer, the clay soils do hold water into spring. This has a cooling effect on the vines and tends to delay bud break. During the heart of the growing season, the dry, shallow topsoils limit vigor.