The New Zealand dollar dipped below 65 US cents for the first time in six years as better than expected US data revived optimism about the strength of the world's biggest economy, and stoked expectations the Federal Reserve will start hiking interest rates.
The kiwi fell as low as 64.87 US cents, and was trading at 65.01 cents at 8am in Wellington from 65.22 cents yesterday. The trade-weighted index declined to 69.44 from 69.67 yesterday.
The greenback got a boost from better than expected US non-manufacturing ISM report showing robust activity in the world's biggest economy.
Markets are divided on whether the Fed will start raising interest rates from the near-zero policy it's been running since the global financial crisis, and upbeat data is seen as making a hike more likely.
Friday's release of non-farm payrolls for July are the next big indicator for the US economy, and will be closely watched after a private payrolls report came in below expectations.