temperature Introduction Temperature is critically important to viticulture , wine-making , wine maturation , and wine service (see service of wine ), each in very different ways. Climate, viticulture, and temperature Temperature is widely considered the most important climatological factor affecting grapevines, although others such as sunlight , rainfall , humidity , and wind are also important. Coombe and Gladstones comprehensively review the role of temperature in viticulture. Vines in cool climates start growing in the spring at about the time when the mean air temperature...