Hormuz Oil Traffic Rebounds as Tankers Test New Gulf Route
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Oil tanker traffic through the Strait of Hormuz is rebounding after months of disruption, with trade intelligence firm Kpler reporting at least 20 tankers transited the vital waterway on a single day in late June — the highest volume since early in the month. The uptick is easing some of the acute supply fears that have gripped global energy markets since Iran restricted passage through the chokepoint, though flows remain far below prewar norms.
The Strait of Hormuz is the single most important artery in the global oil trade. Before hostilities erupted, roughly a quarter of the world's seaborne crude and about a fifth of its liquefied natural gas passed through the narrow passage between Iran and Oman every day. Any interruption there ripples almost instantly through prices at refineries, ports, and gas pumps around the world.
Traffic collapsed after February 28, when the United States and Israel launched an air campaign against Iran. In retaliation, Iran's Revolutionary Guard Corps warned vessels against transiting the strait, boarded and attacked merchant ships, and laid sea mines, effectively throttling one of the planet's busiest shipping lanes and sending insurers and shipowners scrambling to reroute or halt cargoes.
A brief thaw came in mid-June. On June 17, Trump and Iranian President Masoud Pezeshkian signed a memorandum of understanding aimed at ending the war and lifting the blockade, and on June 19 a renewed ceasefire between Israel and Hezbollah was announced. Markets rallied on hopes that normal flows would resume and that the risk premium baked into crude prices would deflate.
That optimism proved fragile. Israel continued strikes in southern Lebanon, and Iran responded by declaring the strait closed again, citing the Israeli actions as a violation of the agreement. The whipsaw underscored how tightly energy prices are now tethered to each twist in the diplomacy — and how quickly gains can evaporate when the ceasefire wobbles.
The latest improvement stems from a June 27 announcement by the Joint Maritime Information Center of a widened transit route near Oman, allowing increased naval and commercial traffic in both directions. The new corridor represents a direct challenge to Iran's claimed control over the waterway and has given shipowners a measure of confidence to send vessels back through, albeit cautiously and often under naval escort.
Even so, the recovery is partial. Late-June volumes of around 20 tankers a day pale against prewar levels, when more than 100 ships routinely transited the strait daily. Shipping executives say many owners remain wary given the mines, the risk of seizure, and soaring war-risk insurance premiums that have made each voyage dramatically more expensive than it was a year ago.
The price action reflects the uncertainty. West Texas Intermediate crude, which began the year near $57 a barrel, spiked to a peak of $113 in April at the height of the crisis before easing back to the mid-$70s as some traffic resumed. Analysts caution that prices remain unusually sensitive to headlines and could lurch higher again on any sign the strait is being closed anew.
The energy shock has broader macroeconomic consequences. Surging fuel costs helped push US consumer inflation to 4.2% in May, the highest reading since 2023, complicating the Federal Reserve's policy path and dampening expectations for interest-rate cuts this year. Central bankers across oil-importing economies are watching Hormuz flows as a key variable in their inflation forecasts.
For Asian economies in particular, the stakes are acute. China, India, Japan, and South Korea draw heavily on Gulf crude and LNG, and prolonged disruption forces them toward pricier alternative suppliers and longer shipping routes around the region. That, in turn, tightens global tanker capacity and adds to freight costs that ultimately reach consumers.
Diplomats caution that the current reprieve could prove temporary. The underlying conflict remains unresolved, the memorandum of understanding is being tested by events on the ground in Lebanon, and Iran retains both the capability and the incentive to squeeze the strait as leverage. Every escalation carries the potential to reverse the fragile recovery in shipping volumes.
For now, energy traders are treating the rebound with cautious relief rather than celebration. The return of tankers to Hormuz suggests the worst-case scenario — a total, sustained closure — has so far been avoided. But with volumes still a fraction of normal and the ceasefire hanging by a thread, the world's most important oil passage remains one headline away from another shock.
Investors, refiners, and policymakers will be tracking the daily transit counts closely in the days ahead. A steady climb back toward prewar levels would help unwind the risk premium and ease inflationary pressure; a renewed closure would send crude sharply higher and reignite fears of a broader energy crisis. In the Strait of Hormuz, the margin between stability and disruption has rarely been thinner.
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