The New Zealand dollar gained as an unexpected decline in US retail sales raised speculation an increase in US interest rates may start later than previously thought, weighing on the greenback.
The kiwi rose to 67.04 US cents at 8am in Wellington, from 66.73 cents at 5pm yesterday.
The trade-weighted index advanced to 70.94 from 70.68 yesterday.
The US dollar index, which measures the greenback against a basket of currencies, declined after a report showed US retail sales slipped 0.3 per cent in June, the weakest reading since February, and surprising economists who expected a 0.3 per cent gain.
The weaker retail data comes after a disappointing employment report for June and a sharp drop in small business confidence, stoking expectations the Federal Reserve may hold off raising interest until December rather than September.