A firefight in the Strait of Hormuz sent the euro to a multi-week low against the dollar as traders piled into safe-haven assets, reviving demand for the greenback.
The euro slipped to 1.1594 against the dollar on Monday, its weakest level in three weeks, after reports of a naval engagement in the Strait of Hormuz triggered a broad risk-off move across currency markets. The waterway handles about 21% of global oil trade, and the escalation pushed Brent crude above $84 a barrel, compounding pressure on the single currency.
"The immediate reaction is textbook risk aversion — dollar buying, euro selling, and a bid for gold and oil," said Elena Fischer, geopolitical risk analyst at Edgen. "The question is whether this becomes a sustained disruption or a contained incident, and markets are pricing for the former until proven otherwise."
The euro has now erased nearly half of its May gains, which had pushed the pair to 1.18 earlier in the month. The single currency remains within the 1.15-1.20 range it has held for the past year, though Monday's move brought it within striking distance of the lower boundary. The dollar index rose 0.3% to 104.2, while gold gained 0.8% to $2,368 an ounce as investors rotated out of risk-sensitive positions.
Why the Strait of Hormuz matters for the euro
The euro's vulnerability to a Hormuz disruption stems from Europe's outsized reliance on imported energy. The region's industrial electricity prices already average $95 per megawatt-hour — nearly double U.S. levels — and any sustained spike in crude or LNG costs would widen that gap further. Higher energy prices also complicate the European Central Bank's tightening path: markets currently price about 25 basis points of rate increases at both the June and July meetings, but a prolonged energy shock could force the ECB to choose between fighting inflation and supporting growth.
UBS, which maintains a medium-term bullish bias on the euro, acknowledged the near-term risk. The bank said the euro could still fall below 1.15 if energy prices remain elevated, though it expects the pair to recover to 1.18 by September and 1.20 by year-end as Federal Reserve rate cuts eventually outweigh the drag from higher energy costs.
What comes next
The immediate market focus is on whether the Hormuz incident escalates or de-escalates. A quick resolution would likely trigger a sharp euro rebound toward 1.17, while any signs of sustained disruption — such as shipping insurance surcharges or reduced tanker traffic — could push the pair toward the 1.15 floor. The last time a similar naval confrontation occurred in the strait in 2019, the euro fell 1.2% over two weeks before recovering as diplomatic channels reopened.
For European investors and importers, the stakes are clear: every 1-cent decline in EUR/USD raises the dollar-denominated cost of oil imports by roughly $400 million annually for the euro area, based on the region's average monthly crude import bill. With Brent already above $84 and the euro testing 1.16, the cost of Europe's energy dependence is being repriced in real time.
This article is for informational purposes only and does not constitute investment advice.