Yes, gas prices will likely continue rising through summer 2026. The national average is currently $4.56 per gallon as of late May 2026—already up $1.38 to $1.40 from May 2025—and industry forecasts predict prices could reach $4.80 per gallon by mid-summer, with a risk of hitting $5.02 per gallon if Middle East supply disruptions persist. A family planning a summer road trip in June might expect to pay over 40% more than they did just a year ago, adding hundreds of dollars to vacation budgets.
The primary culprit is the ongoing Strait of Hormuz disruption, which affects over 10 million barrels of crude oil per day—roughly 10% of global supply. Since February 2026, gas prices have jumped 50-60% year-to-date, far outpacing inflation. The situation is most severe in California and Hawaii, where prices already exceed $6.00 per gallon. Even as fall approaches, the EIA’s broader 2026 forecast shows only a 6% decline compared to 2025 levels, meaning relief may not come quickly for consumers.
Table of Contents
- What’s Driving the Summer 2026 Gas Price Spike?
- How High Could Summer Prices Actually Go?
- Regional Disparities: Why California and Hawaii Pay the Most
- What the EIA and Industry Forecasters Actually Predict
- Geopolitical Risks and Forecast Limitations
- How Summer 2026 Gas Prices Compare to Historical Highs
- What to Expect from Fall 2026 Onward
- Conclusion
What’s Driving the Summer 2026 Gas Price Spike?
The Strait of Hormuz closure remains the single biggest factor pushing prices higher. This narrow waterway between Iran and Oman handles roughly 21% of globally traded petroleum, so even partial disruptions have immediate ripple effects across global markets. When supply tightens, refineries compete harder for available crude, and those costs flow directly to pump prices within weeks. Additionally, summer fuel blends required for environmental compliance add approximately 15 cents per gallon to production costs.
These cleaner-burning formulations reduce air pollution during warm months but are more expensive to manufacture. A driver buying 15 gallons for their weekly commute in July pays $2.25 more just for the seasonal formula change—before accounting for crude oil price swings. The 50-60% price surge since February reflects both the supply shock and speculative trading. When market participants expect prices to rise, they lock in purchases at current levels, which paradoxically accelerates the climb. The gap between May 2025 ($3.16/gallon on average) and May 2026 ($4.56) illustrates how compressed the price increase has been.
How High Could Summer Prices Actually Go?
GasBuddy’s official summer forecast settles on $4.80 per gallon as the likely average, but this assumes no major new disruptions. If the Strait of Hormuz situation escalates or if additional geopolitical tensions emerge, the all-time high of $5.02 per gallon becomes plausible. That scenario would exceed 2022’s post-pandemic spike and would squeeze household budgets across the country. The limitation of price forecasts is their dependence on assumptions about supply and demand that can shift rapidly. A hurricane in the Gulf of Mexico, a refinery outage, or unexpected demand destruction (consumers cutting discretionary driving) could all alter the trajectory.
Conversely, if the Middle East situation de-escalates faster than expected, prices could peak lower. The forecast range reflects this uncertainty—it’s a probability estimate, not a guarantee. Long-term futures markets for crude oil suggest some moderation by fall. Brent crude is expected to average $101 per barrel in June, decline to $90 per barrel by July, and drop further to $89 per barrel in the fourth quarter. If those projections hold, gas prices should begin declining in August and September. However, refineries typically maintain higher profit margins during summer driving season, so retail pump prices may not fall as sharply as crude prices would suggest.
Regional Disparities: Why California and Hawaii Pay the Most
California’s $6.00-plus per gallon prices reflect a combination of factors beyond crude oil costs. The state’s unique environmental standards require special fuel blends that only a handful of refineries produce, limiting competition and boosting prices. Hawaii’s isolation compounds the problem—nearly all fuel must be transported by ship, adding freight costs that other states don’t face. A consumer in Los Angeles paying $6.10 per gallon is paying $1.54 more than someone in Mississippi paying $4.56—the same national average.
Over a month of typical driving (500 miles), that’s an extra $30 to $40 for West Coast drivers. Annual costs become significant: a California resident driving 12,000 miles per year could pay $1,800 more than a Midwest driver for identical mileage. These regional price gaps create economic pressure on local economies. Delivery services, rideshare drivers, and logistics companies operating in expensive-fuel states face thin margins and often pass costs to consumers through higher prices for goods and services. The price disparities also incentivize cross-border fuel purchases, with some Californians driving to Nevada for cheaper gas—though this workaround only benefits those near state lines.
What the EIA and Industry Forecasters Actually Predict
The U.S. Energy Information Administration projects full-year 2026 gasoline prices will be 6% lower than 2025 levels. This creates a seeming contradiction: summer 2026 prices are rising dramatically, yet the full-year average is expected to decline. The explanation lies in the forecast for Q4 2026, when crude oil is expected to average $89 per barrel—a meaningful drop from current levels—and seasonal demand for heating oil competes with gasoline production. Long Forecast models suggest June 2026 crude oil will average $101 per barrel (Brent), with a gradual decline through summer.
This trajectory, if accurate, would put peak pump prices in July or early August, followed by a steady slide through fall. The practical implication for consumers is that summer 2026 is the expensive window—waiting until September to take a road trip could save 15-20% on fuel costs. The tradeoff is that summer offers better weather for travel, outdoor activities, and vacation scheduling. A family might rationally accept higher fuel costs to travel when children are out of school and destinations aren’t crowded. Alternatively, off-season travel in May or September becomes an attractive money-saving strategy, though with different constraints around activity availability and weather reliability.
Geopolitical Risks and Forecast Limitations
The biggest caveat to any 2026 gas price forecast is geopolitical risk. The Strait of Hormuz remains vulnerable to escalation, and new Middle East tensions could emerge at any moment. If the current situation intensifies, crude could spike $20-30 per barrel in days, pushing pump prices to $5.50 or higher nationwide. This risk is real but speculative—it’s not guaranteed, and forecasts must assume a baseline scenario. Currency fluctuations represent another often-overlooked factor. Oil is priced globally in U.S.
dollars, so a stronger dollar makes crude cheaper for foreign buyers and can dampen demand, while a weaker dollar has the opposite effect. The dollar’s path through summer 2026 is nearly impossible to predict but directly affects pump prices. Consumer behavior also shifts price dynamics in ways forecasters struggle to model. If prices spike above $5.00 per gallon, people may drive less, take public transit, or shift to electric vehicles more aggressively. Reduced demand would push prices down, but the lag between price spikes and behavioral change means pump prices might peak before demand destruction kicks in. Forecasts typically assume gradual, predictable shifts rather than sudden behavioral breaks.
How Summer 2026 Gas Prices Compare to Historical Highs
The all-time U.S. record for gas prices is $4.11 per gallon (national average) in July 2008, during the oil boom. At $4.80-$5.02, summer 2026 prices would exceed that record in nominal dollars. When adjusted for inflation, the 2008 peak was equivalent to roughly $5.50 in today’s dollars, so summer 2026 could approach but likely not exceed the inflation-adjusted record—unless the $5.02 scenario materializes.
A consumer who filled a 15-gallon tank at 2008’s peak paid about $61.65. At 2026’s predicted $4.80, they’d pay $72. The same 2026 scenario at $5.02 would cost $75.30 per fill-up—roughly 22% more in nominal terms than 2008’s record. For working families, this matters. Someone with a long daily commute or irregular work schedule could spend $300-500 monthly on fuel by mid-summer, disrupting household budgets significantly.
What to Expect from Fall 2026 Onward
By September 2026, the EIA models expect crude oil to settle around $89 per barrel on average, which would put pump prices in the $3.50-$4.00 range by late fall. This represents meaningful relief from summer peaks but still remains elevated compared to historical norms before 2021. The trajectory suggests gasoline prices will normalize gradually through Q4 2026 rather than cliff-diving suddenly.
Looking to 2027, the outlook remains uncertain and hinges on whether Strait of Hormuz disruptions resolve. If international tensions ease and supply normalizes, gas prices could drift closer to $3.00 per gallon by early 2027. However, if geopolitical risks persist, prices could stabilize in the $3.50-$4.00 range as a new baseline. Supply-side issues (refinery capacity, crude production levels) and demand patterns (EV adoption, economic growth) will all influence the trajectory beyond this summer.
Conclusion
Gas prices will almost certainly keep rising through summer 2026, peaking most likely in July or August around $4.80 per gallon on the national average, with localized highs exceeding $6.00 in California and Hawaii. The Strait of Hormuz supply disruption shows no signs of immediate resolution, and the seasonal shift to summer fuel blends adds an additional 15-cent cost burden. While the EIA forecasts a 6% decline in full-year 2026 prices compared to 2025, this improvement comes primarily in Q4, meaning summer remains the expensive window for consumers.
For households and businesses planning summer activities, the practical reality is clear: fuel costs will be a significant budget item, likely 40-50% higher than a year ago. Options include adjusting travel timing toward early fall when prices should decline, combining trips to reduce total miles, or shifting to alternatives like public transit or rideshare services. Those with flexibility should monitor weekly price reports from GasBuddy and major news outlets, as Midwest and Southern states will likely remain 50-75 cents cheaper per gallon than coastal alternatives, making regional price awareness a useful money-saving tool.