Iran–Hormuz developments can move the US dollar, gold, and forex pairs by changing oil supplies, inflation expectations, and how much risk investors are willing to take. The Strait of Hormuz is a shipping route used to move oil and gas out of the Persian Gulf. When traffic through it changes, the effects can reach far beyond the energy market.

Key Takeaways

• Fewer oil shipments through Hormuz can raise energy prices and pressure countries that import fuel.
• The US dollar may gain when investors seek safety or expect US interest rates to stay higher.
• Gold may rise during uncertainty, but a stronger dollar and higher interest rates can hold it back.
• EUR/USD, GBP/USD, USD/JPY, USD/CAD, and AUD/USD can respond for different reasons.
• Shipping activity and oil prices offer more useful clues than a headline alone.

Why does the Strait of Hormuz matter to currency markets?

Hormuz connects Persian Gulf exporters with buyers around the world. Its importance gives shipping news the power to change expectations about oil and gas supply.

The scale is clear in US Energy Information Administration data. About 21.6 million barrels of oil per day passed through the strait in the final quarter of 2025. That fell to 4.9 million barrels per day in the second quarter of 2026. Liquefied natural gas flows also fell sharply over that period.

Traffic has remained uncertain. On September 22, Reuters reported that only two commodity vessels had crossed the strait the previous day, based on preliminary tracking data. That daily count may miss ships travelling with tracking devices switched off, so it should be read as a sign of disruption rather than a complete count.

When less energy reaches buyers, oil and gas can become more expensive. Importers then need more money to pay for fuel. Higher transport and production costs can also push up prices for other goods. Those pressures affect growth, central bank decisions, and demand for currencies. The International Monetary Fund says energy importers have been more exposed to the current Middle East shock than exporters that can keep selling their fuel.

How could Hormuz news move the US dollar?

The dollar could strengthen if a new threat to shipping makes investors seek assets they see as safer. It could also gain against currencies from countries facing larger energy import bills. In a forex pair such as EUR/USD, a stronger dollar usually makes the quoted price fall.

Interest rate expectations add another layer. If expensive oil keeps US inflation high, traders may expect the Federal Reserve to hold interest rates higher for longer. That can support the dollar because dollar assets may offer a better return.

Neither outcome is automatic. A severe oil shock could also slow the US economy. If traders focus more on weaker growth than on inflation, expectations for future Fed policy could shift again. The key question is whether the market sees the news mainly as a reason to seek dollars, expect higher US rates, or worry about US growth.

Why might gold rise or fall during Hormuz tensions?

Gold often attracts buyers when conflict and market uncertainty increase. Some investors hold it because its value does not depend on a company’s earnings or a government bond payment. The World Gold Council says gold remained sensitive to geopolitical concerns and sudden changes in investor sentiment in the first half of 2026.

But fear alone does not set the gold price. Gold pays no interest. If oil driven inflation pushes bond yields higher, interest paying assets may look more attractive. A stronger US dollar can also make dollar priced gold more costly for buyers using other currencies.

That is why gold and the dollar can rise together for a time, then move in different directions as interest rate expectations change. For XAU/USD, the market price of gold in US dollars, watch both the demand for safety and the dollar’s strength.

Which major forex pairs could react?

EUR/USD and GBP/USD: Watch energy costs and central banks

Europe imports energy, so a lasting rise in oil or gas prices can raise costs for households and businesses. That may weigh on the euro and pound against the dollar. The IMF has also identified some European economies, including the United Kingdom, as exposed to higher gas costs.

Higher inflation could lead traders to expect tighter policy from the European Central Bank or Bank of England. That might support either currency. Yet high fuel bills can also weaken growth. For EUR/USD and GBP/USD, the direction depends on which effect matters more to traders and how it compares with the US outlook.

USD/JPY: The yen and dollar may both attract cautious investors

Japan imports much of its energy, so dearer oil can increase its import bill. That may put upward pressure on USD/JPY, meaning more yen are needed to buy one dollar.

The yen can also attract buyers when investors cut risky positions. As a result, USD/JPY may swing in either direction during a sudden escalation. Oil prices, US bond yields, and the Bank of Japan’s policy outlook can help explain which force is leading.

USD/CAD: Higher oil may help Canada’s currency

Canada exports oil. When oil prices rise, the Canadian dollar may benefit, which can pull USD/CAD lower. That relationship has limits: an oil price rise caused by lost supply can also shake wider markets and boost demand for the US dollar.

Check whether Canada is gaining from the higher price and whether dollar strength is outweighing any support for the Canadian currency. An oil headline by itself is not enough to call the pair.

AUD/USD and USD/PHP: Import costs and risk appetite matter

The Australian dollar often responds to global growth expectations and investors’ appetite for risk. A prolonged energy shock could weaken that outlook and weigh on AUD/USD, even though Australia also exports some energy.

For Philippine readers, USD/PHP shows another direct link. The Philippines imports fuel, and oil is priced internationally in dollars. If oil becomes more expensive while the dollar strengthens, the peso cost of fuel can rise on both counts. That can add pressure to local inflation and the peso. It does not mean USD/PHP must rise after every Hormuz headline; local policy and other money flows matter too.

What should traders check after a new Hormuz headline?

First, ask whether ships are actually moving and whether exporters can deliver oil through other routes. A statement about reopening is different from a sustained return of shipping.

Second, check Brent crude, a widely used oil price benchmark, alongside gold and the US dollar. If oil rises while the dollar strengthens, fuel importers may face the strongest pressure. If oil falls as traffic recovers, some of that pressure may ease.

Third, compare interest rate expectations across the two countries in the pair you follow. A currency’s move reflects both sides of the pair, not Hormuz news alone. The EIA’s September outlook expected shipping flows to recover gradually while some export limits persisted, but its forecast used information available only through September 3. New developments need a fresh check.

What is the main takeaway for forex traders?

Iran–Hormuz news matters most when it changes the amount of energy reaching buyers or the cost of moving it. From there, higher oil prices can affect inflation, growth, interest rate expectations, and currency demand. The dollar and gold may both draw attention during uncertainty, while each forex pair reflects its own balance of risks.