World oil demand will fall 2.6 million b/d to 102.4 million b/d in 2026, the International Energy Agency said in its Oct. 14 Oil Market Report. The market stays in deficit through yearend anyway. Supply is the problem, not appetite for barrels.

The IEA cut its 2026 demand growth forecast by 560,000 b/d from September. Fourth-quarter consumption drops 2.5 million b/d year on year. High fuel prices and a weakening economy do the damage. A 2 million b/d recovery follows in 2027 — still 620,000 b/d below 2025 levels. Promises of a demand rebound rest on prices easing, and the IEA offers no guarantee they will.

What is happening with supply?

Global supply rose 2.5 million b/d month over month to 102.3 million b/d in September. OPEC+ (the producer alliance spanning OPEC members plus Russia and allies) supplied 2.1 million b/d of that gain, led by Saudi Arabia.

But the agency sees supply falling 5.8 million b/d to 100.7 million b/d this year before rising 7.7 million b/d in 2027. That recovery hangs on one chokepoint. "Next year's recovery remains contingent on sustained improvements in Hormuz flows," IEA said.

The numbers behind September's rebound are striking. Gulf crude exports surged 4.4 million b/d to 13.9 million b/d — over 75% of pre-war levels. Ship-to-ship transfers in the Gulf of Oman lifted total Hormuz throughput (the strait carrying roughly a fifth of seaborne oil) by 3.7 million b/d to 10.9 million b/d. East-West pipeline bypass exports added 970,000 b/d to reach 5.6 million b/d.

The caveat comes straight from the agency. "Due to heightened security concerns amid increased Houthi attacks in the region in October, we have left the projections for the remainder of the year largely unchanged," IEA said. Renewed attacks on tankers and energy infrastructure threaten further gains. Take September's momentum as conditional, not structural.

North Sea Dated crude averaged $116.89/bbl in September, up $26.17/bbl from August. That is the price signal telling refiners supply has not kept pace.

Why is diesel still the pinch point?

Global diesel exports ran nearly 700,000 b/d below year-earlier levels in September. Gains from other suppliers only partly offset losses from Russia and the Middle East. The IEA expects tightness "well into 2027."

Middle East refined product flows tell the sharper story. Product shipments rose 210,000 b/d to 1.9 million b/d and LPG (liquefied petroleum gas) climbed 90,000 b/d to 670,000 b/bl — against pre-war levels of 4.7 million b/d and 1.5 million b/d respectively. Refined exports remain below half of what they were before the conflict, even as crude flows recover.

The agency quantified the squeeze. Disruptions cut global diesel/gasoil availability by 1.5 million b/d in second-quarter 2026 and 1.7 million b/d in third-quarter 2026 versus year-earlier levels, "putting diesel markets under extreme pressure."

Prices reflect it. Diesel has eased from all-time highs above $200/bbl in September, but benchmarks still trade near double crude prices and pre-crisis levels. "Record diesel prices are already having broad economic consequences by raising the cost of goods and impacting real incomes, economic activity, and inflation," IEA said.

What about refinery runs and inventories?

Global refinery runs hit a seasonal low of 81.3 million b/d in October before recovering to 84.6 million b/d by yearend, the IEA projects. The margin split is uneven: higher crude and freight costs squeezed European and Asian refiners, while discounted feedstocks drove record US margins. Location, not skill, is deciding who profits this cycle.

Inventories tightened further. Observed global stocks fell 10 million bbl in September, as a 113-million-bbl onshore draw exceeded a 103-million-bbl build in oil on water. Non-OECD inventories dropped 76 million bbl, with Chinese onshore crude accounting for 59 million bbl of that.

Stocks ended September 509 million bbl below end-February levels. Onshore inventories sit at their lowest since at least 2016. That is thin cover for a market betting on a supply recovery the IEA itself calls fragile.

The takeaway: deficits persist into 2027 unless Hormuz flows hold and diesel supply returns. Watch the November OPEC+ meeting and the next round of Houthi attack reports — either one can rewrite this forecast.