"The USD continues to be left in the doldrums as markets look for fresh direction from the new US president," David Croy, senior rates strategist at ANZ Bank New Zealand, said in a note.
"We can see good reasons for NZD strength, but caution that the move may start to fade should the market subscribe to Donald Trump's bold ambitions".
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New Zealand inflation was 0.2 per cent in the final three months of 2016 for an annual rise of 1.2 per cent, according to the median in a BusinessDesk poll. That puts the annual rate back within the Reserve Bank's target band for the first time in more than two years.
ANZ's Croy said the resurgent TWI, which is back near its 2016 highs, "is likely to send a few shivers down the spines of monetary policymakers, particularly given the lift in local retail interest rates that have also contributed to tighter financial conditions".
At 79.30, the TWI is about 3.7 per cent higher than the average 76.4 level the central bank projected for the first quarter in its November monetary policy statement.
The kiwi traded at 95.58 Australian cents from 95.50 cents late yesterday and advanced to 4.9668 Chinese yuan from 4.9622 yuan. It rose to 67.53 euro cents from 67.29 cents, was at 57.89 British pence from 57.83 pence and climbed to 82.48 yen from 81.60 yen.