The Canadian, Australian and New Zealand dollars all fell solidly on Thursday, tracking a drop in oil prices as OPEC countries meeting in Vienna looked like they would go no further with production cuts than previously expected by markets.
The U.S. dollar, which has steadied after its worst week in more than a year, fell 0.1 percent against the index measuring its broader strength while gaining marginally to 111.75 yen and $1.1213 per euro respectively.
The Canadian equivalent earlier hit a one-month high of C$1.3385 after the Bank of Canada gave a more upbeat assessment of the Canadian economy than some investors expected.
But as oil prices struggled to get back into positive territory for the day on the sidelines of the OPEC meeting, it gave up its gains to trade 0.2 percent lower at C$1.3427.
The Norwegian crown, another oil-linked currency also fell initially, before recovering to stand 0.1 percent higher to 9.3320 crowns per euro.