Commodities June 4, 2026 02:45 PM

Iranian Oil Shipments Plunge to Six-Year Low After U.S. Naval Blockade

May exports drop to about 209,000 bpd as blockade that began April 13 sharply curtails Iranian crude and tightens global supply

By Maya Rios

Iran's crude oil and condensate exports plunged to their lowest level in at least six years in May, falling below 300,000 barrels per day and averaging about 209,000 bpd, according to shipping data compiled by Vortexa. The decline follows a U.S. naval blockade instituted on April 13 and has contributed to a tightening of global oil supply, with knock-on effects from Iran's effective closure of the Strait of Hormuz on other Gulf producers.

Iranian Oil Shipments Plunge to Six-Year Low After U.S. Naval Blockade

Key Points

  • Iran's crude and condensate exports fell to about 209,000 barrels per day in May, their lowest level in at least six years, according to Vortexa.
  • Exports declined sharply from 1.34 million bpd in April and nearly 1.9 million bpd in March, following a U.S. naval blockade that began on April 13.
  • The disruption has tightened global supply and Iran's effective closure of the Strait of Hormuz has also reduced exports from Saudi Arabia, Kuwait, Iraq and the United Arab Emirates, affecting regional oil flows and shipping.

Iran's outbound shipments of crude and condensate collapsed in May to levels not seen in at least six years, falling under 300,000 barrels per day as a result of a U.S. naval blockade that began on April 13. Shipping data and analyst estimates compiled by Vortexa show May exports averaged roughly 209,000 barrels per day.

The May total marks a steep reduction from volumes recorded earlier in the spring. Vortexa's figures indicate exports were about 1.34 million barrels per day in April and nearly 1.9 million barrels per day in March. Those month-to-month moves represent a rapid contraction in Iranian outbound flows following the imposition of the blockade.

Vortexa noted that the May export level is the lowest since the late 2019 and early 2020 period, which coincided with the prior U.S. policy of "maximum pressure" against Iran. The comparison underscores the severity of the current export slump relative to recent history.

The U.S. blockade has directly constrained Iranian sales, while wider market dynamics reflect tighter global supply conditions. The situation has been compounded by Iran's effective closure of the Strait of Hormuz, which Vortexa and analysts say has reduced exports from several other Gulf producers, including Saudi Arabia, Kuwait, Iraq and the United Arab Emirates.

The rapid fall in shipments between March and May highlights the sensitivity of regional oil flows to naval and maritime disruptions. Data compiled by Vortexa provides the basis for the export estimates cited here.


Data snapshot

  • May exports: approximately 209,000 barrels per day (Vortexa)
  • April exports: roughly 1.34 million barrels per day
  • March exports: nearly 1.9 million barrels per day
  • Lowest exports since: late 2019 - early 2020

This report is derived from shipping data and analyst estimates; Vortexa is identified as the source for the export figures.

Risks

  • Continued naval blockade and maritime disruptions could sustain reduced export volumes, maintaining pressure on global crude supply - this affects oil markets and downstream fuel sectors.
  • Ongoing constraints in the Strait of Hormuz may further curtail exports from multiple Gulf producers, increasing volatility for energy markets and shipping insurance and freight sectors.
  • Reliance on shipping data and analyst estimates introduces data uncertainty; reported export figures are contingent on the accuracy and coverage of such sources, which can influence market perceptions.

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