The high peaks of the main Alpine chain protect South Tyrol from the Atlantic winds and cold northerlies, while the region benefits from the Mediterranean climate from the south. Terlano has a remarkable microclimate, with pronounced differences in temperature between day and night caused by the cool downslope winds from the mountains.
To the south, a number of mountain massifs like the Adamello also have a protective function. As a result, annual precipitation is only about one-third of the average for the southern Alpine foothills, and the number of hours of sunshine is higher. The climatic conditions are not unlike those to be found in wine-growing areas like the Swiss Canton Valais.
When the sun rises behind the mountains east of Terlano on one of the year’s 300 sunny days, it is already high in the sky as the wine-growing area has a westerly to southwesterly exposure. The lower atmospheric density permits more direct solar irradiation with less diffuse sunlight. That increases the difference between the slopes on the sunny and shady sides of the valley.
Microclimate in Terlano
Continental climate (Cfa Köppen-Geiger)
Annual sunshine hours: ø 2135
Maximum temperatures: 38,2 °C
Average temperatures: 12,9 °C
Minimum temperatures: -10,7°C
Annual precipitation: ø 600 - 700 mm
Average global radiation: 150,1 W/m²
North foehn: cool and dry down-slope wind
Ora: valley wind system from the south, bringing in air from the Po Valley