What was the total OPEC crude output in May, and how does it compare to historical levels?

OPEC crude output from its 11 current members fell to 16.33 million barrels a day in May — the lowest level in at least 37 years — after dropping by 1.22 million barrels a day, according to the Bloomberg survey cited in the article.

How much did Iran’s oil production decline in May, and what caused it?

Iran’s oil output tumbled by 710,000 barrels a day to a five-year low of 2.34 million barrels a day in May, driven primarily by the US-imposed blockade of its ports beginning in mid-April and the broader disruption in the Persian Gulf, including the effective closure of the Strait of Hormuz due to the war between a US-Israeli alliance and Iran.

OPEC Output Plunges Further as US Squeezes Iran, Survey Shows

Jun 5, 2026

OPEC crude output hit a 37-year low in May as US sanctions and regional conflict curtailed production, particularly in Iran and Kuwait. Despite symbolic quota hikes, actual supply remains severely constrained by maritime blockades and war disruptions.

bloomberg

2026-05-11

OPEC Oil Output Hits New Low in April Amid Hormuz Export Disruption, Reuters Survey Finds

2026-06-05

OPEC Output Plunges Further as US Squeezes Iran, Survey Shows

2026-06-10

OPEC Oil Output Lowest Since 2000 as US Blockade Squeezes Iran, Reuters Survey Shows

2026-07-03

OPEC Output Surged in June as Hormuz Flows Jumped, Survey Shows

2026-07-03

OPEC oil output jumps in June as Gulf producers begin reviving supply, Reuters survey shows