Tempranillo Navarra, and Penedès. During the 1990s, growers in Australia and South Africa started significant Tempranillo plantations. Tempranillo is a black grape with a thick skin. It grows best at relatively high altitudes, but it also can tolerate a much warmer climate. With regard to Tempranillo's production in various climates, wine expert Oz Clarke notes, In the Ribera del Duero the average July temperature is around 21.4° Celsius (70.5° Fahrenheit), though temperatures in the middle of the day in the lower valley can jump as high as 40 °C (104 °F). At night the region experiences a dramatic diurnal temperature variation,
Tempranillo that Californian Tempranillo wine production began to flourish, following the establishment of suitably mountainous sites. Production in this area has more than doubled since 1993. During the 1990s, Tempranillo started experiencing a renaissance in wine production worldwide. This surge began partly as a result of the efforts of a 'new wave' of Spanish growers who showed that it was possible to produce wines of great character and quality in areas outside of the Rioja region. One result of this has been that Tempranillo varietal wines have become more common, especially in the better-suited, cooler Spanish regions like Ribera del Duero,