At 9.30 am(0130 gmt), the local note was quoted at 3.9100/9150 versus the greenback from 3.9170/9200 on Friday.
TOKYO: The dollar was broadly higher on Wednesday, hitting a six-month high against the yen, after Federal Reserve Chairman Jerome Powell gave an upbeat outlook for the U.S. economy and reinforced views that the Fed was on track to steadily hike interest rates.
In closely watched congressional testimony on Tuesday, Powell said he saw the United States on course for years more of steady growth, while largely discounting the risks associated with a trade war.
The dollar was up 0.05 percent at 112.97 yen after going as high as 113.08, its strongest since January 9.
The euro was 0.05 percent lower at $1.1655 after losing 0.4 percent overnight.
"The dollar stands to gain further, particularly against the yen, with risk aversion in the equity markets petering out," said Junichi Ishikawa, senior FX strategist at IG Securities in Tokyo.
"And while long-term Treasury yields are not rising prominently, this is a reflection of investor demand for U.S. assets that generates a degree of dollar-buying."
Wall Street stocks rose on Tuesday, with the Dow Jones Industrial Average <.DJI> posting its fourth consecutive session of gains after Powell's optimistic analysis of the U.S. economy. [.N]
The pound stood little changed at $1.3104
In addition to the dollar's broad strength, sterling has come under pressure from British politics.
The currency fell to a three-week low of $1.3068 overnight as investors expected more Brexit challenges after Theresa May's government only narrowly won a parliamentary vote on post-Brexit trade with the European Union.
The dollar index against a basket of six major currencies <.DXY> edged up 0.1 percent to 95.051 after rising roughly 0.5 percent the previous day.
The Australian dollar was a shade lower at $0.7377
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