Nice, local wine festival in Stammersdorf this weekend. Stammersdorf is a neighborhood in the northern part of Vienna, easily reachable by Tram 31 from Schottenring (on the Ring). Austrian music, wine stalls in a very atmospheric former village now incorporated into Vienna. Vineyards and great views of Vienna as well.
http://www.viennawurstelstand.com/event/stammersdorf-wientage-25-und-26-august-2018/