"The NZD is up on all the major crosses, although apart from NZD/GBP, gains have been contained to within 0.1-0.5 per cent, with much of that occurring during NZ trading hours."
Dairy prices at the latest GlobalDairyTrade auction fell 0.8 per cent in the trade-weighted index's first decline since March, while prices for whole milk powder, New Zealand's key export, dropped 3.3 per cent to US$3,022 a tonne. Wong said that was broadly in line with expectations after recent months showed stronger prices than anticipated.
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With no local data today, central banks remain in focus and the RBNZ's review tomorrow is expected to see governor Graeme Wheeler keep the official cash rate at 1.75 per cent and retain his neutral bias.
"Falling oil prices and the stronger NZD will give the bank more confidence that the recent run-up in inflation to over 2 per cent is just a temporary phenomenon," Wong said.
Chicago Federal Reserve president Charles Evans told CNBC he still thought US inflation would reach 2 per cent, although recent data made him "a little nervous about that" and that the Fed could wait until December before deciding on another rate hike.
The kiwi slipped to 80.71 yen from 80.93 yen yesterday, holding near three-and-a-half month highs after the Bank of Japan stuck to its ultra-loose policy last week at a time when other major central banks are rolling back the stimulus.
The local currency edged up to 65.05 euro cents from 64.07 cents yesterday and increased to 95.58 Australian cents from 95.32 cents. It decreased to 4.9432 Chinese yuan from 4.9498 yuan. The trade-weighted index was at 78.15 from 78.06 yesterday.