A bumper 2018 wine harvest will support export volumes and value, but the down side could be pressure to drop prices.
Another consideration is the present flaring trade tensions in the UK, Europe, US and China, where demand for New Zealand's relative luxury status wine could soften, from any fallout from the tensions, ASB senior rural economist Nathan Penny said.
The 2018 grape harvest "jumped" on 2017's level. The national harvest was up 6%, or 23,000 tonnes to 419,000 tonnes and a 4% increase in yield accounted for most of the harvest lift, Mr Penny said.
"The larger harvest will support export volume and value growth this year," he said.
For the year to May 2018, export values rose 3.3% compared with the year earlier, mainly due to higher export volumes. Prices lifted just a touch, he said.