Klagenfurt am Wörthersee Autumn Fair Klagenfurt 2026 DateWednesday, 16 September 2026 at 09:00 – Sunday, 20 September 2026 at 18:00 LocationKlagenfurt am Wörthersee OrganizerCityPulse Official Sources DetailsAutumn fair in Klagenfurt with diverse offerings and attractions.