What is important during what seasons at vineyards Vineyard Seasons Weather is said to be the single greatest influence on the character of a vintage.
Wine makers pay close attention to the seasons, and to cyclical changes over time.
Monitoring cyclical changes is critical. Many of the old, established vineyards have calendars going back centuries, with detailed records monitoring seasonal changes. Planning and operating a successful vineyard is a detailed, painstaking process for which there is no set of guidelines. Each year new factors, technologies and theories influence the volume and quality of wine produced. Hail will not only damage a current crop of grapes, but ruin the next year's as well.