"The yen, whilst weaker against the US dollar, is still pretty strong against the likes of the euro so competition into China from Europe is intensifying from Japan's point of view because of the situation with the euro/yen."
Bancorp's Cavanaugh said the kiwi was also recovering some ground lost over the weekend after the stronger US jobs data, however the yen hadn't benefited because of Japan's weak gross domestic product report.
The yen weakened to 121.18 per US dollar, from 121.07 yesterday.
In New Zealand today, data is released on electronic card transactions for February at 10:45am, and the Real Estate Institute may publish its latest house sales data for February.
Traders will also be watching for Chinese February inflation data due today.
The New Zealand dollar rose to 95.61 Australian cents from 95.31 cents yesterday ahead of a report on Australian business confidence today.
The kiwi gained to 67.92 euro cents from 67.64 cents yesterday and edged up to 48.74 British pence from 48.68 pence.
The trade-weighted index gained to 77.43 from 77.05 yesterday.