Brent crude oil surged past $79 per barrel on July 13, 2026, climbing roughly 4% as Iran’s Islamic Revolutionary Guard Corps declared the Strait of Hormuz closed to shipping, raising concerns about a critical global oil supply route. The price jump reflects traders’ immediate reaction to the announcement made the previous day that the strategic waterway would remain sealed until what Iran described as the end of U.S. interference in the region.
The Strait of Hormuz carries approximately 20% of global petroleum liquids consumption, according to the U.S. Energy Information Administration, making it one of the world’s most vital energy corridors. Any prolonged closure threatens to disrupt millions of barrels of daily oil flows and ripple through global energy markets.
Iran’s closure announcement came after the U.S. launched fresh military strikes on Iranian targets, escalating a conflict that has roiled energy markets since February 2026. The timing of the Strait’s closure—after weeks of relative stability—sent shockwaves through oil trading floors. Earlier this month, Brent crude had settled near $76 per barrel as diplomatic hopes briefly lifted, but the renewed hostilities reversed those gains.
When a comparable supply disruption occurred in March 2026, oil prices jumped more than 10% within a single trading session, described by analysts as the largest supply disruption in the history of the global oil market, according to NBC News. That earlier crisis saw the Strait closure reduce global oil flows by an estimated 11 million barrels per day, according to Bloomberg analysis.
Market analysts have warned that prolonged Strait closures carry significant upside risk for oil prices. JP Morgan estimates, cited in recent market commentary, suggest that a sustained closure could push oil prices toward the $120–$130 per barrel range. However, some forecasters have grown more cautious; Citi cut its average Brent forecasts to $75 and $70 per barrel for the third and fourth quarters of 2026 respectively, assuming eventual normalization of flows through the strait.
Oil prices are likely to remain volatile as long as the United States and Iran remain unable to resolve the status of the Strait of Hormuz, according to the New York Times. The brent crude oil price surge underscores how quickly geopolitical tensions in the Middle East translate into global energy cost pressures, affecting everything from gasoline at the pump to shipping and manufacturing expenses worldwide.
Sources
- Trading Economics — Brent crude oil price and 4% daily gain on July 13, 2026
- HDFC Sky — Brent crude surge to $79.11 with 4% gain on July 13, 2026
- Bloomberg — Iran’s July 12 declaration closing the Strait of Hormuz
- Reuters — Iran’s closure announcement and U.S. strike context
- U.S. Energy Information Administration (EIA) — Strait of Hormuz carries approximately 20% of global petroleum liquids consumption
- Britannica — Strait of Hormuz carries roughly 25% of maritime oil trade
- NBC News — Oil prices jumped 10% in March 2026 during largest supply disruption in history
- Bloomberg — Strait closure reducing global oil flows by 11 million barrels per day
- New York Times — Oil prices likely to remain volatile amid U.S.-Iran standoff over Strait status
