Technically a part of Napa Valley, the Carneros region straddles both Sonoma & Napa counties. It's the Napa region closest to the San Francisco peninsula and the San Pablo Bay, which is instrumental in controlling the climate of the area. The winds from the San Pablo bay create a cool weather pattern ideal for growing Chardonnay and Pinot Noir.
Both Chardonnay and Pinot Noir from Carneros are delicate, yet complex, with firm structure and acidity. And while the pair are the most popular varieties of the region, some winemakers have branched out, particularly with Syrah. The cool climate Syrah of Carneros is well structured and stylistically similar to Syrah from the Northern Rhone, though often fuller-bodied.