In general, the climate of Umbria is similar to that of Tuscany – cold, rainy winters and dry summers with abundant sunshine.

There is an exception in the area between Lake Trasimeno and Lake Bolsena, where a mild, sub-Mediterranean microclimate dominates. The lakes moderate the climate both in cold and warm conditions because even shallow water has an effect of storing and releasing heat (thermal inertia), resulting in long summers and moderate winters.

Torre Bisenzio vineyards are located mid-way between these two lakes, resulting in similar climatic conditions to Bordeaux.

However all of these factors, temperature, sunlight and rain vary from year to year, which results in a diverse array of characteristics, which due to the organic production cannot be normalised in the winery.

The average temperature throughout the year is 18°C. The summer months, July, August and September are much higher, with an average temperature of 28°C. During the peak summer months of the growing season, temperatures can often spike to 35°C with clear skies 70% of the time. During the growing season, which takes place from April to late September, the vineyards receive about 1,400 hours of sunlight and the diurnal temperature variation can be up to 14°C. The cool evenings (the diurnal shift) are also a help. During the night and early morning hours, it is common for temperatures to average 10°C. The chill in the night air adds the much needed acidity to the grapes.

Moisture is equally important. In an average year, there is close to 850mm of rain per year.

Wind is a moderate factor in the climate, as most of the time, wind speeds are modest, ranging from 5 mph to 9 mph, but can peak at 12 mph with the south-westerly winds. Whilst this gives good ventilation for the vines, it can also bring with it hail storms which can damage the vines.