The Oak Knoll District of Napa Valley AVA is an American Viticultural Area located within Napa Valley AVA at the southern end of the valley floor. The appellation’s close proximity to San Pablo Bay results in a climate that is cooler and more moderate than any region in Napa Valley other than the Los Carneros AVA. The AVA has more vines planted to it than any other wholly contained appellation within the Napa Valley.