"Underpinning the outperformance of the 'oil-linked' currencies was a 6.6 percent jump in the WTI oil price, ahead of the coming weekend's Doha meeting of OPEC and non-OPEC producers," Bank of New Zealand senior market strategist Kymberly Martin said in a note. "However, there is no tangible evidence that a production freeze will be agreed."
WATCH: The Economy Hub on the NZ Dollar:
A weaker US dollar was also bolstering other currencies against it, Martin said, noting traders were pricing in less than a 50 percent chance that the Federal Reserve will hike interest rates by the end of the year.
In a speech on Friday night, New York Fed president William Dudley reiterated comments from Fed chair Janet Yellen that there was "significant uncertainty" about growth prospects abroad, requiring the need for a cautious, gradual approach to rate hikes.
Locally, New Zealand spending on electronic cards for March is scheduled for release today.
The New Zealand dollar edged up to 89.95 Australian cents from 89.81 cents on Friday, and gained to 4.3902 yuan from 4.3869 yuan. It weakened to 59.47 euro cents from 59.59 cents, slipped to 48.09 British pence from 48.12 pence, and fell to 73.28 yen from 73.65 yen.