Thinking about going after read my post about Dreamy Mendoza?
At first, be well organized. For some reason (probably its fame), Mendoza area are almost always sold out. So If you wish to get to know the most unique wineries (not those touristic and big ones) and stay in special hotels, you should schedule everything at least several months in advance. Otherwise you will have to “accept” the options you get. See where I recommend you to stay here.
It’s better If you have a local agency to arrange everything for you. So we made it through Red Globe Tours, with Roman (the owner) and I can say they are absolutely dynamic, answering my questions and requests very fast.
Each season has it’s own particular beauty. In our first visit, we went there in the end of summer, during harvest, so the vineyards were abundant and beautiful, full of grapes, and it was still hot (about 20oC – 30oC). In April or May, it’s cooler but still warm, the Andes Mountains a bit white, and the vineyards’ leaves red. It’s magical! During winter it’s cold and can snow ocasionally. I saw some pictures and it’s amazing, but you are going to need more bottles of red wine (not a problem, at all). During spring, it’s warm and the leaves start to grow again. The best thing is that Mendoza has very dry weather, so whenever you go it’s almost always sunny.
An important thing to know before you go is that Mendoza is vast and the wineries and their vineyards are spread all over three different main areas: Maipú, Lujan de Cuyo and Valle de Uco. In my post Singular Wineries of Mendoza, I tell you more about the wineries I visited in my first visit.