The Climate:
A unique characteristic of the Valley is its continental climate. Different to other wine producing regions of the world, it has no maritime influence.

Undoubtedly, the greatest asset of San Juan is the sun, which is plentiful and generous and shines over the vineyards through clear, transparent skies, providing over 3,200 hours of sunlight in 310 days. Under these favorable conditions, the cultivated varieties grow and develop their full character.

The Valley has a temperate - warm climate with no significant temperature variation throughout the year although the difference between diurnal and nocturnal temperatures is significant. (Mean annual temperature is 17°C).

Rainfall is scarce (90 mm per annum), and the summers are dry. Under these conditions, the health of the plants and grapes is excellent but irrigation is necessary. The water is brought from the Andes across a complex system of canals.

The wind is gentle, and the night breezes provide excellent ventilation and keep the grapes healthy. Different to other regions of the world, no special treatments are necessary. In spring, the "Zonda", the typical wind of the area, blows hot and dry.

The vineyards take full advantage of these characteristics, the altitude, the dry climate, and the temperature differences, and produce mature wines with an intense fruity flavour.
Geography:
The Province of San Juan in Argentina, is located between 31 and 32 degrees latitude South.

Wine production is mainly in the Tulum Valley, in the Andean foothills (1600 - 6400 m. above sea level). The valley, that is approximately 100 Km. long, 5 - 50 Km. wide, and runs from north to south in the central south area of the Province of San Juan at an altitude of 650 - 750 m., constitutes a privileged region for viticulture.
The Soil:
The alluvial soil is deep, rocky, covered with clay and sand in some areas. The land is virgin, little cultivated, and its health and mineral contents make it ideal for grape growing.
The Water:
Irrigation water is pure, runoff water from the high Andean peaks that is carried mainly by the San Juan River and, to a lesser extent, by the ground water table.











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