Why is the US dollar rising against the South Korean won today? US rate hike and resistance levels in focus

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US Dollar/Korean Won gains 0.56% today

Highlights

The Federal Reserve raised its benchmark rate by 25 basis points to a 3.75% to 4% range, the first move of this size in over three years.
The US rate hike increased the interest rate gap with South Korea, fueling capital outflows, higher dollar demand, and rising Korean Treasury yields.
USD/KRW shows short- and medium-term bullish momentum with strong buying signals, trading in a ₩1,378 to ₩1,399 range over the next several days.

Fed rate hike drives capital outflows and fuels won volatility

The U.S. Federal Reserve has raised its benchmark interest rate by 25 basis points to a range of 3.75% to 4%, the first increase of this size in over three years, according to Koreatimes Co and Khan Co. This move has widened the interest rate gap between the U.S. and South Korea, encouraging capital outflows and prompting higher demand for U.S. dollars. In addition, Korean Treasury yields have increased in response, leading to higher funding costs for domestic businesses and households and intensifying currency market volatility.

Buyer dominance as USD/KRW tests overbought signals above support

USD/KRW has surpassed the MA-20 at ₩1,383 and the MA-50 at ₩1,379 on the active timeframe, with price action remaining below the MA-200 at ₩1,468. Immediate technical support is marked by the Ichimoku Kijun at ₩1,382. Among oscillators, RSI posts a reading of 62.17, while MACD and ADX both maintain buy signals. The Awesome Oscillator confirms positive momentum, and both CCI and Bull/Bear Power are in overbought territory, reflecting strong buyer dominance in the intraday session. The Stoch RSI is neutral, suggesting that despite broader upward momentum, near-term overextension may increase the likelihood of a temporary pullback or period of consolidation.

Sideways trade likely as bullish bias dominates intraday outlook

In the short term, USD/KRW is expected to fluctuate between ₩1,378 and ₩1,399 over the next two to three trading days, capturing typical volatility for the pair. There is a very high probability of further upside within this corridor, while a move lower is viewed as very unlikely. The most probable scenario is a period of sideways movement within this established range, with a decisive breakout above ₩1,399 serving as a signal for renewed bullish momentum. Conversely, a fall below the ₩1,382 support level would open the door to a brief corrective phase.

Anton Kharitonov, expert at Traders Union, sees limited room for optimism in USD/KRW despite the pair’s technical strength above key averages. He notes that higher U.S. rates and a widened rate gap are fueling outflows from Korea and placing further pressure on the won. However, signs of overbought conditions and rising Korean funding costs point to heightened volatility and a likely consolidation phase. "With risks mounting and upside limited by resistance, I remain cautious until we see confirmation of a sustained breakout above ₩1,399."

Earlier, analysts noted that USD/KRW was exhibiting short-term strength within a broader environment of mixed momentum and hesitation around key technical levels. The current analysis builds on this outlook by highlighting the impact of the recent Fed rate hike on the pair's underlying direction, with traders advised to monitor for a breakout above ₩1,399 as a signal for renewed upside momentum.

Source of Data: USD Price Analysis by TU

The analysis is based on a proprietary model combining technical, on-chain, and expert data. Not investment advice. See methodology

The information is based on forecasts and does not constitute investment advice or a guarantee of future results. Market conditions may change. See our Disclaimer and Editorial Integrity for details.