Skip to content
Welcome, thoughtbot's Giant Robots listeners!Start here
Russia-Ukraine War 2026
12OCT

Saudi Red Sea bypass fell 41% before blockade

2 min read
10:59UTC

Wood Mackenzie data published 24 July showed Saudi Red Sea crude bypass fell 41% from a March peak by June, a de-escalation the 23 July blockade wiped out within a week.

ConflictDeveloping
Key takeaway

June's easing in Saudi Red Sea bypass reversed in a week, so freight must price a snapback, not a trend.

Wood Mackenzie data published on 24 July shows Saudi Red Sea crude bypass peaked at 4.07 million barrels a day in March and fell 41% to 2.39 million by June⁠1. Bypass here means Saudi crude routed away from the Red Sea approach to avoid the Houthi threat, so a falling number reads as de-escalation and returning confidence in the corridor.

The timing undercut the reading. Wood Mackenzie is an energy research firm whose flow data desks treat as a considered read on trend, yet the series it released describes a market that had already reversed. The Bab el-Mandeb blockade of 23 July snapped the bypass back toward full within a week, so a desk taking the 24 July print at face value would have inferred a cooling trend one day after the flow turned.

Read the two series together and June's normalisation shows its condition: it held only while the strait stayed open. The March-to-June decline unwound inside a week, which means a Red Sea freight position cannot be sized as though the calm were a fading trend. It has to carry a snapback premium for any single security shock, because the last one erased four months of easing in seven days.

Deep Analysis

In plain English

A research firm called Wood Mackenzie tracks how much Saudi oil avoids the Red Sea by using satellite data on ship movements, but building that picture takes several weeks. Its report published on 24 July said Saudi oil avoiding the Red Sea had fallen 41% by June, suggesting tensions were easing. But a new blockade declared the day before, on 23 July, had already reversed that trend. So the report described a calm that was already over by the time readers saw it, a reminder that even good data can lag fast-moving events.

Deep Analysis
Root Causes

Vessel-tracking analytics firms validate AIS position data against port-call records and cargo manifests before publishing route-flow estimates, a process that takes weeks rather than days; this lag is structural to how the data is compiled, not a one-off delay specific to this release.

During a period of rapid re-routing, that lag means the most-cited market benchmark for Red Sea bypass volume is systematically describing conditions that have already changed, leaving desks without a real-time equivalent until the next monthly cycle.

What could happen next?
  • Risk

    Analysts trading on the most recent published route-flow data risk anchoring to conditions that have already reversed by several weeks.

First Reported In

Update #20 · Saudi crude reroutes to Suez, freight bites

World Pipelines (citing Wood Mackenzie)· 27 Jul 2026
Read original →
Causes and effects
This Event
Saudi Red Sea bypass fell 41% before blockade
A desk reading only the 24 July release would infer a cooling trend, yet the flow snapped back to full bypass the day after the data went out, so any Red Sea freight position has to price a one-week reversal.
Different Perspectives
Government of Latvia
Government of Latvia
Latvia abstained on 22 September when the EU renewed its individual sanctions for 36 months at the price of delisting Alisher Usmanov and Mikhail Fridman, and promised national sanctions of its own. Riga's abstention marks how far a frontline member state will go to keep listed names listed.
India's Ministry of External Affairs
India's Ministry of External Affairs
After the House passed the Graham bill on 16 September, India's foreign ministry said it would keep buying energy on market terms and protect its trade. Russia supplied 30.3% of India's crude imports in fiscal 2026, so the tariff decision due around 18 October falls directly on New Delhi.
Kaja Kallas, EU foreign policy chief
Kaja Kallas, EU foreign policy chief
Kallas answered the US licence on 10 October by saying Europe would not ease pressure, and EU ministers adopted a 22nd package of nearly 1,600 listings two days later. Brussels is tightening as Washington loosens, though TASS reported the package adds no significant new trade restrictions.
Donald Trump and the US Treasury
Donald Trump and the US Treasury
The Treasury licensed Russian diesel imports until 7 April 2027 on the day of Trump's call with Putin, and Trump then told reporters Ukraine should find a new leader. Washington is trading sanctions relief for fuel supply while pressing Kyiv to halt the refinery strikes behind the shortage.
Kremlin and Deputy Prime Minister Alexander Novak
Kremlin and Deputy Prime Minister Alexander Novak
After the 9 October call the Kremlin said Russia was ready to supply oil and petroleum products to American and global markets, and Novak brought forward the end of diesel export curbs. Moscow is selling the shortage back as goodwill, with volumes that Decree No. 686 now hides from outside checks.
Volodymyr Zelenskyy, President of Ukraine
Volodymyr Zelenskyy, President of Ukraine
Zelenskyy called GL 135 an investment in prolonging the war and offered to stop striking Russian refineries if Russia stops destroying Ukraine's energy system. Answering Trump's call for a new leader, he set a total 60-day ceasefire as the condition for elections, which puts the next move on Moscow.