Within the Napa Valley, the Oakville American Viticultural Area (AVA) is a two-mile-wide region from the Vaca Mountains in the east to the Mayacamas Mountains in the west. Oakville's heritage includes some of Napa Valley's top producers of Cabernet Sauvignon, including Robert Mondavi, Joseph Heitz, Far Niente and Screaming Eagle.
Climate: Moderately warm, with temperatures commonly in the mid-90°F (34-35.5°C) range in high summer, but also still strongly affected by night and early morning fog which helps keep acidity levels good. East side of the AVA receives more of warmer afternoon sun.
Elevation: 75 to 500 ft (23 to 150m).
Rainfall: 35 inches (87.5cm) annually.
Soils: Primarily sedimentary gravelly alluvial loams on the western side, with more volcanic but heavier soils on the eastern side. Low to moderate fertility and fairly deep, with average water retention.
Principal varieties & characteristics: Cabernet Sauvignon, Merlot: Ripe currant and mint flavors, rich texture and full, firm structure tempered by rich fruit. Sauvignon Blanc: Full, steely, yet very fleshy.