Winemakers say the 2013 grape harvest produced one of the best vintages ever, with high-quality grapes picked in all regions.
Figures from Winegrowers New Zealand show 345,000 tonnes of grapes were harvested this year - up 28% on last year's reduced harvest and 5% up on 2011.
Chief executive Philip Gregan said the 2012 harvest left the industry unable to meet consumer demand.
He said the better supply of wine this year will renew export growth, with May exports already at record levels.
This year's wines should be on sale from about September.