The view over McLaren Vale
©SAWIA

The region's grape-growing conditions are varied, due to both its variable topography and its proximity to the cooling influences of the Gulf Saint Vincent. Altitudes differ markedly according to the location, and different mesoclimates are created as a result of varying degrees of exposure to the Mount Lofty Ranges in the north and the Sellicks Ranges in the south. Overall, the climate is Mediterranean, with fresh sea breezes helping to moderate temperatures during the growing season. Chilly winds from the hills also cool the grapes on specific sites, helping to retain acidity and structure. The summers and most of the autumn season are dry, which keeps vine diseases at bay. McLaren Vale also boasts a wide range of soil types, with localized specialties.

The climatic and geographical diversity of McLaren Vale is reflected in the wide array of grape varieties which can be successfully grown here. The best wines come from very old vines, some planted more than 100 years ago. These are prized for producing low yields of extremely concentrated fruit. Shiraz leads the region's list of award-winning wines, making McLaren Vale a favorite place to grow this grape. Cabernet Sauvignon is another prominent grape variety, along with Grenache and Mourvedre, which, together with Shiraz, make up some of the most acclaimed GSM blends here. Chardonnay and Sauvignon Blanc dominate McLaren Vale's white grape varieties, with a plethora of other regional and international specialties such as Merlot, Zinfandel, Tempranillo,  Sangiovese and Viognier also making their mark.