US Natural Gas Market October 2026: Supply Glut and Mild Weather Push Prices to 30-Day Low

The global energy market in October 2026 witnessed unexpected volatility, particularly for liquefied natural gas (LNG) traded in the US (Henry Hub benchmark). After hovering at high levels early in the month, US natural gas prices reversed course and plummeted toward the end of the month. Closing the trading session on October 27, 2026, natural gas prices settled at 2.58 USD/mmbtu (equivalent to approximately 2,460 VND/m³), marking the lowest point in the past 30 days (ranging from 2.58 - 3.32 USD/mmbtu). This article provides a detailed analysis of the supply-demand landscape, the macroeconomic factors at play, and an assessment of how this price decline impacted both domestic and international markets throughout October 2026.

1. US Natural Gas Price Trends in October 2026: A Late-Cycle Slide

Observing trading data in October 2026, Henry Hub natural gas prices experienced a clear cycle of volatility characterized by a gradual weakening pattern. Although the average price for October 2026 reached 3.01 USD/mmbtu (approximately 2,869 VND/m³), slightly higher than the September 2026 average of 2.96 USD/mmbtu (2,821 VND/m³), the trend toward the end of the month was dominated entirely by the selling side.

Specifically, around mid-month (October 18 - 19), prices remained firm above the 3.03 - 3.05 USD/mmbtu threshold. However, within just one week from October 20 to 27, a massive sell-off occurred on the NYMEX exchange:

• October 20: Prices fell to the 2.98 USD/mmbtu mark, officially breaching the psychological support level of 3.00 USD.
• October 22: Increased pressure pushed prices deeper to 2.78 USD/mmbtu.
• From October 23 to 26: The decline slowed slightly around the 2.60 - 2.64 USD/mmbtu range.
• October 27: The market recorded the month's record low at 2.58 USD/mmbtu, despite a minor technical gain of +0.077% in this session (a negligible difference of about 2 VND/m³).

The 30-day fluctuation range from a peak of 3.32 USD to a low of 2.58 USD (a decline of over 22%) indicates that market sentiment shifted from winter consumption expectations to concerns over short-term supply surpluses.

2. Impact of US Natural Gas Prices on the Vietnamese Market

In Vietnam, the Henry Hub natural gas benchmark is not only an international reference point but also has an indirect yet profound impact on the national energy cost structure. With US gas prices converted to approximately 2,460 VND/m³, the domestic market experienced multidimensional effects:

For the power generation and industrial sectors: Natural gas is a critical input fuel for gas-turbine power plants (such as the Phu My, Nhon Trach, and Ca Mau clusters) and fertilizer production complexes (Phu My Fertilizer, Ca Mau Fertilizer). Lower international gas prices help reduce pressure on gas-fired power production costs, supporting Vietnam Electricity (EVN) in optimizing power mobilization costs as hydropower sources enter the water-storage phase at the end of the rainy season.

For LNG import projects: Vietnam is accelerating the operation and completion of LNG import infrastructure (notably the Thi Vai LNG terminal). The cooling trend in global gas prices creates favorable conditions for Petrovietnam Gas (PV GAS) and other key entities to access spot cargo LNG contracts at competitive prices, helping industrial consumers such as steel, ceramics, and construction glass manufacturers reduce production costs.

3. Direct Causes Triggering the Price Slide

The sharp decline in Henry Hub natural gas prices between October 20 and October 31, 2026, stemmed from a combination of fundamental factors within the US domestic supply-demand chain:

Weather Factors: Prolonged "Shoulder Season"

October is often referred to as the "shoulder season" – the transition period between the hot summer and the cold winter. In the second half of October 2026, weather forecast models in the US (GFS and ECMWF) indicated that temperatures across most of the Central and Eastern US states were significantly warmer than the multi-year average. Demand for air conditioning had ceased, while northern cold fronts were not strong enough to trigger residential heating demand (Heating Degree Days - HDD remained low).

EIA Inventory Reports Exceed Expectations

Weekly reports from the US Energy Information Administration (EIA) showed that underground storage facilities continued to record net natural gas injections higher than forecasted. US natural gas storage levels as of the end of October 2026 were approximately 5% to 6% higher than the 5-year average. Fears that storage facilities would reach capacity limits before winter began forced traders to aggressively liquidate long positions.

Production Maintained at Record Highs

Although some independent energy companies announced plans to reduce drilling rigs, associated gas production from shale oil fields in the Permian region (Texas and New Mexico) continued to flow strongly into pipeline systems. The robust development of the Matterhorn Express pipeline, which was put into operation earlier, relieved transportation bottlenecks, moving large volumes of low-cost gas from the Permian to the Gulf Coast, creating further downward pressure on Henry Hub prices.

4. Macroeconomic Context and the Global Picture

Beyond pure supply-demand factors, the natural gas market in October 2026 was also heavily influenced by the international macroeconomic environment:

• Strength of the USD (DXY Index): Throughout October 2026, the USD maintained relative strength as the monetary policies of major central banks continued to diverge. A strong greenback makes USD-denominated commodities more expensive for importing nations, indirectly curbing international purchasing power.
• Maintenance at LNG Export Terminals: Periodic maintenance at key LNG export terminals in the Gulf of Mexico (such as Sabine Pass, Cameron LNG, or Freeport) in late autumn reduced feedgas demand. Excess gas that could not be exported had to remain in the US domestic market, causing localized oversupply.
• Abundant Gas Inventories in Europe: The European natural gas market (TTF benchmark) entered the winter with storage levels reaching over 95% capacity. This reduced the demand for importing spot LNG cargoes from the US, leaving traders with little incentive to accumulate stock at high prices.

5. Market Outlook and Strategic Recommendations

Although US natural gas prices hit a monthly low of 2.58 USD/mmbtu on October 27, 2026, analysts believe that further downside potential will be limited as the market enters November 2026. The 2.50 USD/mmbtu mark is considered a very solid technical and psychological support level.

A single Polar Vortex event appearing early in November or early December could completely reverse the consumption picture. As temperatures drop sharply, the volume of gas withdrawn from storage will surge, triggering a rapid price recovery, as is typical in energy markets.

Recommendations for gas-consuming businesses in Vietnam:

• Fertilizer, chemical, and power generation companies using gas should take advantage of this deep correction to lock in short-term contracts or implement commodity price hedging strategies for the first quarter of 2027.
• LNG trading and distribution businesses should closely monitor weekly EIA inventory reports and North American weather forecast models to capture the reversal point and optimize input material import costs.

In summary, October 2026 closed with the advantage firmly in the hands of natural gas buyers. The combination of mild weather, high inventories, and abundant production created an attractive price floor of 2.58 USD/mmbtu, opening up cost-effective opportunities for consumers before the peak winter consumption cycle officially knocks on the door.