"The kiwi has been driven down this year by weakness in China, the big drop in dairy prices," said Angus Nicholson, market analyst at IG Markets in Melbourne.
"Once prices started to spike up again, a huge amount of speculative money has flowed back into the kiwi.
"The New Zealand dollar has been "somewhat resilient in the face of US dollar strength" amid signs that the domestic economy was on a firmer footing, business and consumer confidence were reviving and dairy prices were firmer.
The New Zealand economy would benefit from the kiwi falling back to within a range of 64 US cents to 66 US cents, he said.
The first test of the kiwi in 2016 may be with US non-farm payrolls on Jan. 9, where the expectation is that the world's biggest economy stacked on another 200,000 jobs in the latest month, Nicholson said.
The bond market was expecting the next Fed rate hike in April and any signs of US economic strength confirming an April move, is likely to weigh on the New Zealand dollar in the first quarter.
"A drop below 66 US cents does seem quite likely," Nicholson said.
The New Zealand dollar fell to 93.78 Australian cents from 94.11 cents yesterday, dropped to 62.62 euro cents from 62.73 cents, weakened to 46.15 British pence from 46.23 pence, declined to 82.39 yen from 82.58 yen, and slid to 4.4416 yuan from 4.4497 yuan.
The two-year swap rate fell 1 basis point to 2.83 percent and the 10-year swaps fell 1 basis point to 3.73 percent.