"The dairy story has been the main one buffeting the kiwi this week," BNZ's Jones said. "It's that dairy auction this morning that has provided the juice for the rally in the kiwi."
Looking ahead today, traders will be eyeing jobs data at 10:45am for signs of how the local economy is tracking. A decline in the first quarter unemployment rate close to 6 per cent would probably further underpin the kiwi, said BNZ's Jones.
BNZ expects the unemployment rate to have ticked down to 6.1 per cent from 6.2 per cent, while economists in a Reuters poll picked 6.3 per cent.
"These job numbers are one of the bigger movers on the local scene for the currency," Jones said. "They can be very volatile and hence illicit big reactions."
The kiwi advanced to 87.86 Australian cents at 8am in Wellington from 87.47 cents at the 5pm market close after the Reserve Bank of Australia yesterday cut its benchmark interest rate a quarter point to 2.5 per cent to help stoke a slowing economy. The move highlighted the divergent economies after New Zealand central bank governor Graeme Wheeler indicated the next move in local rates is up.
Reserve Bank of Australia assistant governor (financial markets) Guy Debelle is speaking as part of a panel today at the Funding Australia's Future Forum in Sydney. That is unlikely to focus on policy, and Friday's Statement on Monetary Policy with its formal forecasts on growth and inflation is the next key event, said BNZ's Jones.
The New Zealand dollar edged up to 77.17 yen from 77.11 yen yesterday and rose to 59.33 euro cents from 59.18 cents. The local currency advanced to 51.45 British pence from 51.13 pence.