The Japanese yen has plummeted below 155 per USD, hitting 155.0720 on December 8, 2025—a 0.15% daily slide and 0.60% monthly weakening—amid Bank of Japan Governor Kazuo Ueda’s tepid signals on rate hikes, despite Finance Minister Satsuki Katayama’s nods to policy normalization. This 2.58% annual depreciation extends a 2025 trend of -0.60% USD/JPY strength, with the pair’s yearly low at 140.72 underscoring yen’s safe-haven erosion as intervention threats fizzle and carry trades proliferate.
Fundamentals drive the rout: Japan’s core CPI at 2.2% tempts hikes, yet Ueda’s “careful consideration” at December’s meeting—coupled with softer U.S. data boosting Fed cuts—has widened yield differentials to 450 basis points, luring yen shorts. Speculation mounts for a December lift-off, but Tokyo’s verbal jawboning yields scant ballast, with USD/JPY eyeing 157 by month-end per forecasts averaging 156.08. Chartwise, a bearish head-and-shoulders on the yen’s weekly frame targets 160, with stochastic oversold at 25 yet Fibonacci retracements holding 154 support precariously.
This collapse burdens importers—energy costs up 15%—while inflating Nikkei’s export glow, up 1.2% weekly. Global ripples amplify: emerging Asia’s currencies wobble, and yen-funded risk assets balloon. Intervention odds at 20% hinge on 158 breaches; absent that, BOJ’s credibility frays, potentially forcing emergency hikes and volatility spikes for forex desks.
