Festival Napa Valley Presented By: Festival Napa Valley (previously Festival del Sole) Recurrence: Recurring on the 2nd Friday of July Address: Napa County, CA Phone: (888) 337-6272 Website Additional Information 10 Days. 100 Wineries. Over 60 Events. Stars of Music, Dance and Theater. Napa Valley's Fine Wine and Cuisine. Enriching Arts and Community Programs.