The South Korean won weakened beyond one-thousand-360 against the U.S. greenback for the first time in 13 years.

The local currency ended at one-thousand-362-point-six won against the U.S. dollar, up by seven-point-seven won from the previous close.

It marked its weakest since April 2009 during the global financial crisis. 

This comes as the U.S. Federal Reserve maintains a hawkish stance of tightening its monetary policy while investors are also concerned about a slowdown in China's economy.