It is a traditional festival organized at the beginning of September every year in order to celebrate grape harvesting, i.e. vintage, fruit of people's labor during the whole year.
Grapes which are picked all together in the vineyards of the Island during the vintage are brought to the center of the city and welcomed with horns and drums and the festival begins.
People working in the vineyards during the day and tourists come together in the evening to watch the activities in the castle.
Vintage Festival time is one of best seasons to visit the Island.