Oil transported through the waterway averaged 4.9 million barrels per day in the second quarter of this year, according to estimates from the U.S. Energy Information Administration’s Short-Term Energy Outlook. That compares to an average of 21.6 million in the last quarter of 2025, before the U.S. and Israel launched attacks on Iran. About 9 million barrels of oil a day exited the strait on average over the past week, according to Energy Secretary Chris Wright. The agency also estimates that Middle East production shut-ins eased to average about 5.5 million barrels a day in July, compared to 7.5 million barrels a day in June. The volume of oil shut in is expected to swell again to 6.6 million barrels a day in the third quarter.