Martha's Vineyard AVA citing historical evidence that viticulture has been practiced on the Massachusetts island named Martha's Vineyard since at least 1602. The maritime location helps to create a slightly warmer climate than the nearby coastal regions of Massachusetts, and a growing season that is almost three weeks longer. The hardiness zone is 7a. Martha's Vineyard AVA The Martha's Vineyard AVA is an American Viticultural Area located in Dukes County, Massachusetts, including all of the land on the islands named Martha's Vineyard and Chappaquiddick Island. These two islands are located off the southern Massachusetts coast, surrounded by Vineyard Sound, Nantucket Sound, and the
Martha's Vineyard cold with a January average of just slightly below . Owing to the influence of the Atlantic Ocean, temperatures below are rare, occurring at least 1 day per year and most days during the winter months rise above freezing. The average annual snowfall is . Summers are warm and mild with temperatures rarely exceeding , with only 1 or 2 days reaching or exceeding it. During the summer months, the island's warmest months (July and August) average around . Spring and fall are transition seasons with spring being cooler than fall. Martha`s Vineyard receives of precipitation per year, which is