Geography & Climate
San Juan is one of the sunniest and driest places on earth, receiving over 330 days of sunshine a year. The climate is intensely hot and arid, even more so than in Mendoza. Successful viticulture depends on irrigation from the San Juan and Jáchal rivers and on finding cooler microclimates in its valleys.
Vineyards are planted across a range of altitudes, but the most promising sites are found in higher valleys like the Pedernal Valley, where the elevation provides cooler temperatures and limestone soils, leading to more elegant and structured wines.