The arid Limarí Valley receives only 80 – 100 mm of rain per year, and grapevines cannot be cultivated without supplemental irrigation.

The rain falls primarily in the winter, with a little in early spring and none in the summer. Their proximity to the sea (20 kms) provide the Casa Tamaya vineyards with an ideal climate for the production of high quality wines. The very cold coastal waters of the Pacific Ocean cool the breezes that blow into the interior of the valley, creating perfect temperatures for the vegetative cycle of the vines.

Maximum daytime summer temperatures of 25º to 30ºC and minimum nighttime temperatures of 10º to 12ºC allow the grapes to fully develop their aromas, flavours, and colours, which results in exceptionally fruit-driven, well-rounded, well-balanced wines. The maritime influence also prevents spring frosts, while the area’s arid conditions ensure that the fruit ripens easily without risk of late summer or early autumn rains.

The piedmont area has granitic, rocky, clay soils that are very poor in organic material, while the flatland soils are clay with a gravel subsoil; both areas are generally alkaline. Water for irrigation comes from the Andes Mountains through an interconnected system of reservoirs with a total storage capacity of approximately 1 billion square meters. The water is brought to the lowland farms through a complex network of canals and pipelines built exclusively for transporting irrigation water.