Why the Yen Isn’t Acting Like a Safe Haven Currency Now

For many years, the Japanese yen was seen as a safe-haven currency. When wars started or markets became unstable, investors often bought yen, causing it to strengthen.

But during the current conflict involving Iran, the opposite has happened. The yen has weakened and USD/JPY has moved close to 160, as oil prices and interest rate expectations are now influencing currencies more than traditional safe-haven flows.

Why the Yen Was Traditionally a Safe Haven

In the past, the yen often strengthened when global uncertainty increased. During wars, financial crises, or sharp stock market declines, investors frequently moved money into safer assets, and the Japanese yen was one of the currencies that benefited from this shift.

There were several reasons why the yen developed this safe-haven reputation:

• Low interest rates in Japan – For many years Japan had very low interest rates, so investors borrowed yen cheaply and invested in higher-yielding assets overseas.
• Carry trades closing during risk-off periods – When markets became unstable, these positions were often closed, creating demand for the yen.
• Large overseas investments – Japanese investors hold significant foreign assets, and during periods of financial stress some of this money can return to Japan.

Because of these factors, the yen was often seen as a reliable safe-haven currency during wars, financial crises, and periods of market volatility.

However, the current situation shows that other macroeconomic factors, such as oil prices and interest rate expectations, can sometimes be more important than this traditional pattern.

Why USD/JPY Is Rising Despite Rising Geopolitical Risk

Since the escalation of the conflict involving Iran, oil prices have surged toward $100 per barrel. Normally, rising geopolitical tensions would increase demand for safe-haven currencies such as the yen. Instead, USD/JPY has continued to move higher, showing that other economic forces are currently driving the market.

The main reason is that higher oil prices are affecting inflation expectations and central bank policy. Rising energy prices influence both the U.S. and Japanese economies, but the impact is very different for each country.

These differences help explain why the U.S. dollar has strengthened while the yen has weakened, even during a period of rising geopolitical risk.

Higher Oil Prices Support the U.S. Dollar

Higher oil prices increase the risk that inflation in the United States could rise again. If inflation stays high, the Federal Reserve may delay interest rate cuts.

This supports the U.S. dollar because:

• Higher interest rates attract global capital
• “Higher for longer” rate expectations increase demand for dollars
• Investors often prefer the liquidity of the dollar during uncertain times

As a result, the U.S. dollar has strengthened even during geopolitical risk.

Higher Oil Prices Hurt Japan More

At the same time, rising oil prices have the opposite effect on Japan.

Japan imports almost all of its energy, so higher oil prices:

• Increase business and household costs
• Reduce consumer spending
• Slow economic growth
• Widen Japan’s trade deficit

Japan also needs more dollars to pay for expensive imported energy, which creates selling pressure on the yen.

The Bank of Japan Is in a Difficult Position

Higher oil prices also put the Bank of Japan in a difficult position. While inflation is rising, raising interest rates too aggressively could hurt an economy already facing higher import costs. At the same time, the Federal Reserve may keep rates higher for longer, widening the interest rate gap and supporting USD/JPY.

Intervention remains a key risk if the yen weakens too quickly, moves become disorderly, or public pressure increases. However, intervention is never guaranteed and timing is hard to predict. Some traders expected action earlier and sold USD/JPY in advance, and because it has not happened yet, some are now holding losses.

Trading Strategies in the Current Market

1. Follow the short-term uptrend
As long as the Bank of Japan does not intervene, USD/JPY may continue to move higher. Some short-term traders focus on buying small pullbacks during an uptrend, aiming to trade in the same direction as the market momentum.

2. Prepare for a possible reversal
Other traders watch for very high price levels and look for signs that the move could reverse. If intervention happens, oil prices fall, or geopolitical tensions ease, USD/JPY could drop quickly.

3. Wait for intervention signals
A more cautious approach is to wait and see if Japanese authorities step in. If intervention causes a sharp fall, traders can then analyze the market reaction and decide whether the move is temporary or the start of a larger trend change.

What Traders Should Watch

Oil prices
Oil prices are very important for the yen. Japan imports most of its energy, so higher oil prices increase costs for the economy and usually weaken the yen.

U.S. interest rate expectations
If traders believe the Federal Reserve will keep interest rates high, the U.S. dollar often strengthens. Higher interest rates attract global capital and support USD/JPY.

Bank of Japan policy
The policy decisions of the Bank of Japan are also key. If the BOJ raises rates faster than expected, the yen could strengthen. If policy stays loose, the yen may remain weak.

The duration of the Iran conflict
If the conflict continues, oil prices could stay high and keep pressure on Japan’s economy. If tensions ease, oil prices may fall and reduce pressure on the yen.

Possible currency intervention
Traders are also watching for possible intervention from Japanese authorities. If the yen weakens too quickly or moves toward levels like 160, the government may step in to slow the move.

The Key Drivers Behind Yen Weakness

The yen’s failure to act as a safe haven shows how macro factors can override traditional market behaviour.

Right now:

• Higher oil prices hurt Japan more than the U.S.
• U.S. interest rates may stay higher for longer
• The Bank of Japan is cautious about raising rates

As long as those conditions remain, USD/JPY may stay strong and the yen may continue behaving differently from its traditional safe haven role.