"When the Swiss National Bank brought interest rates deeper into negative territory, investors were forced to look for alternative safe havens," Kathy Lien, managing director of FX strategy at BK Asset Management in New York, said in a note. "This resulted in money pouring into Australia and New Zealand, two countries still offering an attractive yield.
"One of the biggest winners today was the New Zealand dollar, which rose more than 1 percent," Lien said.
"Like the Fed, New Zealand is one of the few central banks still talking about raising rates."
Nine of 14 economists in a Reuters poll expect New Zealand Reserve Bank governor Graeme Wheeler to raise the benchmark interest rate by the end of this year following four consecutive hikes last year to 3.5 percent.
Commodity currencies such as the Australian and New Zealand dollars also benefited overnight from a rebound in gold and copper prices, while the Aussie was boosted by better-than-expected employment data which improved the outlook for the economy, BK's Lien said. The commodity currency strength didn't extend to the Canadian dollar as home-sales data fell in December and oil prices weakened, she said.
In New Zealand today, accommodation data for November is scheduled for release.
Tonight, the focus will be on December inflation data from the US and the Eurozone. The US also has consumer confidence and industrial production data.
The local currency advanced to 95.19 Australian cents from 94.24 cents yesterday, gained to 51.50 British pence from 50.67 pence and rose to 91.07 yen from 90.85 yen. The trade-weighted index rose to 79.57 from 78.56 yesterday.