US Petrol Prices Reach Their Highest August on Record as Crude Stays Above Seasonal Norms

Verified key facts

• AAA: The national average for regular petrol was $4.10 a gallon on 20 August and remained about $4.10 on 23 August, the highest recorded for this point in August.
• AAA: The August national average was running at about $4.06, above the previous August record of $3.97 in 2022.
• AAA Southern California: The 20 August national price was 97 cents a gallon higher than a year earlier.
• AAA: Crude oil remained in the $80-a-barrel range amid continuing instability around the Strait of Hormuz even as US petrol demand softened seasonally.
• AAA: California, Hawaii and Washington were the three most expensive state markets, at roughly $5.61, $5.42 and $5.26 respectively by 22-23 August.

August has broken a record even without peak-season demand

American drivers are entering the final stretch of summer with the highest August petrol prices in AAA’s records. The motor club put the national average for regular at about $4.10 a gallon on 20 August and $4.099 on 23 August. Its month-to-date average was roughly $4.06, already above the $3.97 average recorded in August 2022. The striking feature is timing. Petrol demand normally softens as school terms resume and long road trips taper off, which often lets pump prices fall before Labor Day. This year that seasonal relief has been blunted by the cost of crude oil. AAA says instability around the Strait of Hormuz has kept crude in the $80-a-barrel range, high enough to hold retail fuel well above last summer even though motorists are not consuming at peak-season rates.

The crude-to-pump chain starts well before a forecourt sign changes

Crude oil is the largest single input cost in petrol, but changes do not pass through one-for-one or instantly. Refiners buy feedstock, convert it into petrol and other products, then wholesalers move fuel through pipelines, terminals and trucks before retailers set pump prices. A sustained crude increase therefore reaches motorists with a lag and can be amplified or softened by refinery margins, inventories, local taxes and transport costs. AAA’s August reports show that dynamic clearly: demand was declining, yet national prices rose because crude had recovered from the $70s back into the $80s. The result is a pump market being driven from the upstream side. Drivers are using somewhat less petrol, but the barrel going into the refinery is expensive enough to overwhelm the usual late-summer demand effect.

Softer demand is preventing an even sharper rise, not creating relief

AAA said US petrol demand was lower in mid-August, a normal seasonal pattern. In a more typical year, that would help inventories rebuild and push prices down. Instead, it has acted as a brake on a market still being pulled higher by crude. That difference is important for households. Consumers can reduce discretionary driving, but they have limited control over the global oil price embedded in every gallon. The national average had briefly fallen to about $4.00 earlier in August before climbing again as crude strengthened. In other words, the demand signal is working; it is simply weaker than the supply-price signal. That also means a de-escalation in the Gulf could produce relatively quick relief, while renewed disruption around Hormuz could push retail prices higher even if American drivers continue cutting miles.

California, Hawaii and Washington are absorbing the largest bills

The national average hides a huge regional spread. AAA listed California at about $5.61 a gallon on 23 August, Hawaii around $5.42 on 22 August and Washington near $5.26. California’s average was more than $1 above its level a year earlier. Those states consistently rank near the top because of a mix of taxes, environmental fuel specifications, refinery geography, supply constraints and transport costs. The West Coast is relatively isolated from the country’s biggest refining centres, so replacing lost supply can be costly. That is why a global crude shock does not land evenly. A 20-cent national move can translate into a much larger household burden in California than in lower-cost states, particularly for workers with long commutes and limited public-transport options.

The year-on-year increase is now large enough to alter household budgets

AAA Southern California calculated that the national price on 20 August was 97 cents a gallon higher than a year earlier. For a household buying 50 gallons a month, that difference is nearly $49 before accounting for changes in driving. The burden is visible because fuel is purchased frequently and prices are displayed in large numbers beside the road. It also reaches beyond motorists: delivery firms, tradespeople, farms and small businesses absorb higher transport costs that can be passed into goods and services. Unlike a one-off price spike, a record monthly average indicates persistence. The question for consumers is therefore not whether one station is unusually expensive, but how long crude remains elevated enough to keep the national baseline near $4 even after the summer travel season fades.

Regional refining conditions add a second layer to the oil shock

Crude is not the only reason the West Coast is expensive. AAA Oregon/Idaho reported that refinery utilisation in the region fell from 93.2% to 90.5% in early August while petrol stocks increased slightly. Lower utilisation can tighten local product supply even when crude is available. California also requires specialised fuel blends, making it harder to replace lost output with barrels from other regions at short notice. These structural factors help explain why California, Hawaii and Washington remain well above the national average during both rising and falling oil markets. They also mean that a future drop in crude may not appear identically across states. National headlines track the barrel; local drivers pay for the entire chain between that barrel and a specific forecourt.

The Labor Day run-up from a $4.10 national average

AAA’s next weekly readings will show whether the usual end-of-summer decline finally reasserts itself before Labor Day. The crucial variable is no longer demand alone. If crude stays in the $80s because shipping risk around the Strait of Hormuz remains unresolved, the national average could remain near current records even as road travel cools. If crude retreats, the softer demand backdrop gives retailers and wholesalers room to pass reductions through more quickly. California, Hawaii and Washington will still be the states to watch for the widest premium over the national number. For households, the key benchmark is simple: $4.10 has become the late-August starting point, not a July peak. Any meaningful relief now requires the upstream oil market to cooperate with the seasonal slowdown already under way.

Sources

• AAA Newsroom - High Crude Oil Prices Push Up National Average (newsroom.aaa.com)
• AAA Fuel Prices - national average (gasprices.aaa.com)
• AAA Southern California - 20 August weekly fuel prices (news.aaa-calif.com)
• AAA Fuel Prices - California (gasprices.aaa.com)
• AAA Fuel Prices - Washington (gasprices.aaa.com)
• Verification note: AAA prices change daily. This article uses the 20-23 August readings and distinguishes national crude effects from state-specific refining, tax and supply factors.