Yen weakens toward 160 per dollar as oil surge and geopolitical tensions limit BOJ policy flexibility

Tokyo | EcoPulse24

The Japanese yen extended its decline on Monday, weakening past 159.5 per dollar and approaching the critical 160 level, as rising oil prices and escalating geopolitical tensions continue to pressure the currency.

The move marks the third consecutive session of losses, driven by renewed strength in energy markets after the United States and Iran failed to reach an agreement during recent peace negotiations. Additional pressure came from US plans to impose a blockade on the Strait of Hormuz, raising fears of a prolonged global energy shock.

Higher oil prices typically weigh on the yen due to Japan’s heavy reliance on energy imports, increasing demand for foreign currency and widening trade imbalances. The latest surge in crude prices has intensified these dynamics, accelerating the currency’s depreciation.

The yen is now hovering near the psychologically important 160 per dollar threshold, a level that previously triggered intervention by Japanese authorities in mid-2024. Markets are increasingly attentive to the risk of official action should the currency weaken further.

The depreciation is also complicating the Bank of Japan’s policy outlook. Policymakers are divided between concerns over rising inflation - driven in part by higher energy costs - and the risk that tightening monetary policy could undermine economic growth.

The central bank is scheduled to hold its next policy meeting on April 27 – 28, where it is expected to assess the balance between inflation pressures and economic stability.

Japan’s Economy Minister Ryosei Akazawa indicated that monetary policy could play a role in stabilizing the currency, noting that a stronger yen may help contain inflation by reducing import costs.

EcoPulse24 Analysis
The yen’s decline reflects the growing impact of energy-driven macro dynamics on currency markets. As oil prices rise, Japan’s structural dependence on imports becomes a key vulnerability, translating directly into currency weakness.

The approach toward the 160 level places authorities in a familiar position. While intervention remains an option, the underlying drivers - energy costs and interest rate differentials - are external and difficult to counter through currency operations alone.

At the same time, the Bank of Japan faces a narrowing policy window. Raising rates could support the yen and help contain imported inflation, but risks slowing an already fragile economic recovery. Holding policy steady, on the other hand, may allow further depreciation and amplify inflationary pressures.

This creates a policy dilemma where traditional tools have limited effectiveness against externally driven shocks.

More broadly, the yen’s movement highlights how the current energy crisis is transmitting across asset classes, linking commodities, currencies, and monetary policy into a single macro narrative dominated by geopolitical risk and supply constraints.