The New Zealand dollar gained as a strong GlobalDairyTrade auction added to positive sentiment about the local economy and traders await a speech to manufacturers and exporters from Reserve Bank governor Graeme Wheeler.
The kiwi dollar rose to 84.87 US cents from 84.37 cents at 5pm in Wellington on Tuesday. The trade-weighted index rose to 77.06 from 76.77.
The local currency has recorded a volatile 24 hours on the back of dairy news, having been sold off on Tuesday after reports China had destroyed branded New Zealand dairy products.
Fonterra Cooperative Group subsequently said its products weren't affected.
The global backdrop was broadly positive for the kiwi, with gains in equity markets in Europe and the US.
"The dairy auction overnight was rock solid and that accentuated the gains" in the kiwi, said Alex Sinton, senior dealer at ANZ New Zealand
"If things are ticking over in New Zealand that could well be better than what's happening in other places in the world."
The New Zealand dollar may trade in a range of 84.60 US cents to 85.10 cents on Wednesday, he said.
The currency fell as low as 84.02 cents when the Chinese dairy reports emerged, causing some investors to short the currency and exacerbating the move higher when the reports were put in context, he said.
The New Zealand dollar jumped to 55.01 British pence from 54.56 pence and rose to 63.34 euro cents from 63.22 cents. It gained to 81.89 Australian cents from 81.72 cents.