The local currency was quoted at 1,162.5 to the dollar at the conclusion of onshore trade, its strongest closing level since Dec. 4 last year. The won was up 0.9 percent compared to Thursday's close of 1,173.3.
The Korea Composite Stock Price Index (KOSPI) recorded more modest gains due to profit-taking, closing up 0.2 percent at 1,992.12 points.