Yen Falters on Divided BOJ Signals as Strong Dollar Pressures Asian Currencies

The U.S. dollar maintained its strength near a two-month peak on Thursday, exerting broad pressure on Asian currencies. The Japanese yen notably weakened after the Bank of Japan's latest policy summary exposed internal divisions over the timing of future interest rate increases.

Despite recent U.S. inflation data coming in softer than expected, the dollar has been buoyed by elevated Treasury yields. The U.S. Dollar Index was trading around 101.58, up approximately 0.13%, capping a monthly gain of about 2% for September—its strongest performance since June, according to Investing.com data.

Yen Slides on BOJ Policy Split

The Japanese yen came under significant pressure, with the USD/JPY pair climbing 0.5% to 158.15. The slide followed the release of the Bank of Japan's (BOJ) September meeting summary, which showed a clear divergence of opinion among board members.

• Some policymakers argued for an accelerated pace of rate hikes to reach a target level sooner.
• Others expressed caution, noting that despite positive Q2 growth, weakening domestic demand meant the economy was not yet on a strong, sustainable expansion path.

This uncertainty has led markets to pare back bets on a near-term rate hike. The probability of a BOJ rate increase by its October 30th meeting is now priced at less than 20%, down from over 30% previously, though a hike by December is fully priced in.

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Mixed Performance Across the Region

Other regional currencies displayed a mixed performance against the firm dollar.

• Australian Dollar: The AUD/USD pair hovered near a two-month low around $0.69. The currency was weighed down by data showing Australia's trade surplus narrowed sharply to A$495 million in August, far below the A$2 billion forecast. This overshadowed the Reserve Bank of Australia's recent 25-basis-point rate hike to 4.60%.
• South Korean Won: Despite a stunning 83.5% year-over-year surge in South Korea's September exports, the won weakened. The USD/KRW pair rose 0.2% to 1,359.80. Analysts at DBS Bank noted that while strong exports offer support, the won's rally may be limited due to neutral valuations and potential portfolio outflows.
• Chinese Yuan: The offshore yuan saw the USD/CNH pair rise 0.1% to 6.72. Trading was thin ahead of China's Golden Week holiday from October 1-7, with markets in both mainland China and Hong Kong closed, reducing regional liquidity.

Broader Market Context

The dollar's strength is occurring amid a challenging environment for global bonds, which suffered their largest monthly decline in years in September. This sell-off has been attributed to concerns over deteriorating government finances, heavy bond issuance, and persistent inflationary pressures, reinforcing a "higher for longer" interest rate narrative that favors the U.S. dollar.