Strait of Hormuz traffic returns to normal by December 31?
I assess a 72% probability that IMF Portwatch will report a 7-day moving average of Strait of Hormuz transit calls at or above 60 at least once by December 31, 2026, because the threshold is reachable given normalizing regional conditions, commercial incentives to use the route, and the fact that a single transient rebound or a data revision can satisfy the condition.
Analysis
Measurement and contract details materially raise the probability relative to a binary view of “fully restored trade”: the market only requires a single 7-day moving average at or above 60 for any date before Dec 31, 2026, and Portwatch revisions made within the market window count toward resolution, so even a brief rebound or later upward revision can trigger a Yes resolution. The metric covers multiple vessel types (container, dry bulk, ro-ro, general cargo, tankers), which diversifies the sources of recovery and makes the target less dependent on one commodity or tanker flows alone.
Geopolitical risk is the dominant external variable and is volatile but historically episodic: past spikes in attacks, sanctions, or naval confrontations have produced sharp but often time-limited declines in transit, with traffic tending to rebound once insurance, naval escorting, and commercial routing adapt; therefore the central question is whether any escalations between now and year-end will be sustained enough to suppress a temporary rebound below the 60 threshold. Because non-state and asymmetric threats (e.g., missile or drone attacks, mining) can quickly depress transits, short-term flare-ups could push probability down, but absent an extended conventional conflict the route has strong structural incentives to recover.
Macro trade demand and shipping economics support recovery to or above the threshold: global seaborne trade in bulk and containers typically grows over time and shipping companies generally prefer the shortest route when security and insurance levels permit, which favors a return to the Straits; additionally, improvements in insurance cover, convoying, or de-escalation diplomacy that have historically followed crises would materially increase traffic. On the other hand, persistent sanctions regimes, long-term rerouting behaviors, or a deliberate strategic decision by major charterers to avoid the corridor would suppress traffic, so monitoring insurance premiums, naval deployments, and public routing advisories between now and late 2026 will be key to updating the assessment.
Arguments
For
- The threshold is for a single 7-day average so a brief operational recovery or a one-week surge is sufficient to resolve Yes.
- Portwatch includes multiple vessel types so recovery in any major segment (e.g., container or bulk) can push the average above 60.
- Historical patterns show that after acute disruptions, shipping routes typically rebound once insurance and security measures improve.
- Commercial incentives favor the shortest route when risk is manageable, so operators will return if escorts and premiums normalize.
- In-period data revisions are permitted and can convert a marginally below-threshold period into a qualifying one.
- Global trade growth or a seasonal surge in commerce could cause temporary spikes in transits that meet the 7-day average.
Against
- A renewed or expanded conflict in the Persian Gulf region would suppress traffic for an extended period and likely prevent any qualifying average.
- Persistent high insurance costs or lack of credible naval protection could keep shipowners routing around Africa despite easing tensions.
- Targeted attacks on shipping or on critical infrastructure could create sustained fear that prevents a return to pre-crisis transit levels.
- Long-term changes in tanker operations and sanctions may permanently reduce the number of transits even if some cargoes return.
- Portwatch reporting gaps or delays could mean actual recoveries are not reflected in the published series in time to qualify.
- Behavioral inertia from charterers and operators who shifted logistics chains away from the Gulf may delay a return even if conditions improve.
Key drivers
- Levels of regional geopolitical tension involving Iran, allied proxies, and external powers dictate risk perceptions for shipowners and insurers.
- Insurance and war-risk premium availability and cost determine whether commercial operators use the shorter Straits route versus detours.
- Global demand for oil, LNG, dry bulk, and containerized goods affects raw traffic volumes transiting the corridor.
- Effectiveness and visibility of naval escorts and multinational maritime security operations influence operator willingness to transit.
- Restoration or expansion of Iranian exports and normal tanker operations would add materially to transit counts.
- Commercial routing practices and charterer preferences for cost versus security shape whether ships resume pre-disruption paths.
- Portwatch reporting completeness and any in-period data revisions can create or reveal crossings of the 7-day average threshold.
- Duration and intensity of any new asymmetric attacks (e.g., by Houthis or other non-state actors) will rapidly depress transit calls.
Risk factors
- A sustained military escalation between Iran and a major external power would sharply and persistently reduce transits.
- Repeated asymmetric attacks or mining incidents that continue into late 2026 would keep operators avoiding the Strait.
- Prolonged or expanded sanctions structures that suppress tanker exports could lower aggregate daily calls below the threshold.
- Prolonged high insurance premiums or lack of credible convoy protection would incentivize rerouting around Africa or other detours.
- Degraded reporting or gaps in Portwatch coverage could delay or obscure a qualifying 7-day average even if actual traffic rose.
- Structural shifts in global shipping that permanently divert routes or cargo types away from the Strait would reduce baseline traffic.
Scenarios
Best case
A diplomatic de-escalation, combined with improved insurance availability and visible multinational naval protection, produces a short but clear recovery in late Q3 or Q4 2026 that pushes the 7-day moving average above 60 and potentially sustains it, allowing an unambiguous Portwatch qualifying value or a later in-window upward revision to create a Yes resolution.
Most likely
Intermittent low-level incidents and periods of heightened caution reduce average transits at times, but tactical improvements in insurance, convoying, and commercial routing produce one or more brief rebounds before year-end that are sufficient to lift the 7-day average to at least 60 at least once, resolving the market to Yes.
Worst case
An extended military confrontation or persistent asymmetric campaign through late 2026 keeps shipowners and insurers avoiding the Strait, traffic remains suppressed below the 60 threshold for the entire period, and Portwatch never publishes a qualifying 7-day average, producing a No resolution.
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