Ontario wineries struggling to find way forward under coronavirus restrictions While a few 2020 table wines have already been released, the 2020 icewines should be available around mid-2021, Macdonald said.The grapes for 2020 icewines have not been harvested yet, as wineries leave them on the vine to be harvested when the temperature drops below -8 C.The regulator’s report said the year was “remarkable” for weather and wine in Ontario, with most wine-growing regions experienced excellent conditions.Macdonald said the 2020 vintage is expected to produce high-quality wines.Wineries are choosing to make table wine, instead of leaving grapes on the vine to make icewine, said Magdalena Kaiser, public relations director of the Winery Marketing.