The New Zealand dollar ended last week below the key 70 US cent level and touched a five-year low over the weekend after the Reserve Bank cut interest rates and traders priced in further reductions in coming months.
The kiwi was trading at 69.93 US cents at 8am in Wellington, from 69.81 cents at the New York close and 70.04 cents at 5pm on Friday.
It touched 69.41 US cents ahead of the New York close, the lowest level since July 2010.
The New Zealand dollar tumbled last week after Reserve Bank governor Graeme Wheeler cut the benchmark interest rate by 25 basis points to 3.25 percent, surprising some in the market who had expected rates to remain on hold.
Economists are split on the likely timing of the next cut, with six expecting July, eight saying September and one betting on December.