New Zealand commodity prices surged last month by the most since the ANZ Commodity Price Index was created in 1986, driven by skim and whole milk powder, butter and cheese.
The index rose 12.6 per cent in April to a record high 333.5, as 12 of the 17 commodities rose, three fell and two were unchanged.
April's gains may mark the high point for the time being, with dairy prices dropping 7.3 per cent in the latest GlobalDairyTrade auction overnight on signs drought is abating at home and doubts grow about the pace of global economic growth.
"As we saw in last night's auction, dairy prices are now starting to pull back from their record high levels, as recent rain has eased concerns about the drought and as attention turns to next season's supply," said Westpac Bank economist Michael Gordon.