It has been a volatile year for oil, with multiple geopolitical escalations and other supply-side pressures bringing black gold to long-term levels that are unsustainable for much of Western society. Brent crude has been above USD 100 a barrel for much of the year and is even now, on 15 October 2026, more than 70% higher than in January at USD 104.38. US West Texas Intermediate (WTI) has also been hovering near USD 96, following recent gains driven by concerns over the security of Middle Eastern energy infrastructure and shipping through both the Hormuz and Bab-el-Mandeb straits. Though this is thankfully a far cry from their May peaks, prices remain elevated as traders weigh persistent supply disruptions against the prospect of recovering exports, with geopolitical developments continuing to inject uncertainty into an already tight market.
Add to this the lack of harmony between OPEC+ and non-OPEC producers and the arrival of the winter heating season, and market participants may still face a rocky ride ahead. One trend that may be helping to restrain price increases in the short term, but which could prove another challenge later down the line, shrinking demand from both industry and ordinary drivers. In this piece, we weigh up these factors as we look at where oil and gas markets could be headed in Q4 2026 and beyond.
Shaky supply
The market's immediate concern is less the political backdrop itself than its implications for physical supply: even when exports continue, longer shipping routes, higher freight costs, and interruptions to refining capacity can constrain the availability of physical crude and refined products. The US Energy Information Administration (EIA) reported that Brent crude averaged USD 114 per barrel in September, up USD 23 from August, forecasting an average of USD 105 in the fourth quarter as supply constraints and dwindling inventories sustain upward pressure. Global oil inventories fell by an estimated 1.9 million barrels per day in Q3, with a further decline of 0.7 million barrels per day forecast for the final three months of 2026. Nevertheless, there is scope for prices to ease if regional export flows recover, alternative shipping routes expand, and supply disruptions diminish. The EIA expects Brent crude to average USD 84 per barrel in 2027, assuming a gradual recovery in production and exports. OPEC+ has agreed to keep its November production targets unchanged, but the decision offers limited near-term relief: key Gulf producers are still pumping well below pre-conflict levels, meaning that even previously announced output increases have not fully translated into additional supply. Saudi Arabia lifted production in September, helping output recover, but recent security disruptions in the region briefly brought the flow of crude and refined products to a standstill. Meanwhile, the International Energy Agency (IEA) has lowered its outlook for oil demand, highlighting the growing risk that high fuel costs and economic uncertainty will weigh on consumption. The market is therefore caught between constrained physical supply and a weaker demand outlook, leaving prices sensitive to any change in regional conditions or the ability of producers to restore exports. For traders, the central question is whether the current geopolitical risk premium will persist or begin to unwind as physical supply conditions improve.
Winter is coming
The approaching Northern Hemisphere winter is putting refined products, particularly diesel, back in focus. The IEA estimates that global diesel and gasoil exports fell by around 700,000 barrels per day year-over-year in September, while lost supply from Russia and the Middle East reached 1.3 million barrels per day. The squeeze pushed diesel refining margins to a record near USD 95 per barrel in September, although European diesel crack spreads subsequently retreated from around USD 100 to USD 60 per barrel by early October as higher crude and freight costs eroded refinery profitability. Seasonal demand for heating-related fuels should also add pressure as winter approaches, but the outlook remains complicated by high prices and a growing reliance on electrical heating methods: the IEA expects global oil demand to contract by 2.5 million barrels per day year-over-year in the fourth quarter, with diesel accounting for a quarter of the projected decline for 2026. Refinery output is expected to return to baseline towards year-end, yet the agency warns that middle-distillate markets could remain unpredictable well into 2027. This is without considering the potential reduction in capacity from ongoing conflicts in both the Middle East and Europe, where refining infrastructure faces operational risks. For market participants, diesel futures and refining crack spreads provide insight into whether winter demand and constrained product supply can sustain margins or whether weaker consumption and recovering refinery runs will ease the squeeze. The broader outlook thus remains asymmetric: oil faces immediate supply risks, while natural gas and heating fuels are increasingly sensitive to regional storage levels, weather, and the ability of suppliers to meet seasonal demand.
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