Anyone following the Panama Canal through water headlines is reading half the story. The defining fact of 2026 is not drought but geopolitics: since the effective closure of the Strait of Hormuz on 28 February 2026, the gas carriers that once crossed the Middle East have been diverting toward Panama, and it is that demand — not a lack of rainfall — that has made transit slots scarce and auction premiums volatile.
Against that backdrop the Panama Canal Authority (ACP) has been adjusting a different variable: the maximum draft at the Neopanamax locks, cut in three preemptive steps because of a now-confirmed El Niño.
Telling the two apart is the whole exercise. One limits how much cargo a ship can carry. The other determines what priority access costs. They move independently, they respond to different signals, and conflating them produces bad planning.
Where the draft stands today
| Step | Draft (TFW) | Status |
|---|---|---|
| 3 July 2026 | 15.09 m (49.5 ft) | Superseded |
| 24 July 2026 | 14.94 m (49.0 ft) | In force |
| 15 August 2026 | 14.78 m (48.5 ft) | Announced, not yet in effect |
The reference point is the design maximum of 15.24 m (50 feet), which was in force through the first half of 2026. The cumulative reduction to 15 August is roughly 46 centimetres.
Two points get lost in most coverage. The last two steps were announced together in a single advisory dated 1 July, not as separate decisions — so the August step has been known since the beginning of July. And proportion matters: at the worst of 2023–24 the authorised draft fell to around 44 feet. These are moderate adjustments by that standard.
The benchmark: 2023–24, then recovery
The 2023–24 stretch remains the yardstick. Gatún Lake fell to 79.6 feet in August 2023 — close to the lowest level on record, from May 2016 — and the ACP cut daily transits sharply. From 30 July 2023 it reduced the number of daily passages, and the resulting backlog reached as many as 160 vessels waiting on one side or the other, against a normal peak of around 90; average waiting time that August was nearly four times the June figure. Transits bottomed at 18 per day in February 2024.
For scale on how tight that was: below 79 feet the canal must restrict maximum allowable draft as a matter of operational necessity. The 2023 low was barely above that line.
The recovery was equally clear. By August 2024 the lake had risen to 85 feet, near the month’s five-year average of 85.3, and with the shift to La Niña and increased rainfall the canal returned to normal parameters — roughly 36 daily transits and a 50-foot maximum draft for Neopanamax vessels. Fiscal year 2025 (1 October 2024 – 30 September 2025) ran unrestricted throughout, including the dry season.
The ACP reported 13,404 transits for FY2025 (+19.3% against 11,240 in FY2024), 489.1 million CP/SUAB tons (+15.6%), and revenue of B/.5,705 million (+14.4%). These FY2025 figures should be confirmed against the ACP’s own release before republication; they are consistent with the recovery but were not independently verified for this article.
One caution on reading them. FY2025 was a recovery year without restrictions — it is not evidence of performance under a restrictive regime, because there was none. And the revenue growth has an official explanation rather than a speculative one: more transits and a favourable cargo mix, with containers and LPG strong and LNG below expectations owing to global freight-market conditions. There was no “volume decline offset by tariffs.”
The demand shock: Hormuz
Iran effectively shut the Strait of Hormuz to commercial shipping on 28 February 2026 in response to US and Israeli strikes, the US established its own blockade, and the IRGC confirmed the formal closure on 2 March. Roughly a fifth of global oil supply and all of Qatar’s LNG normally transit that passage.
The consequence for Panama is direct. With that corridor strangled, buyers across Asia — particularly in India, where LPG is a domestic cooking staple — pivoted sharply toward US Gulf Coast suppliers, and the Panama Canal is the most direct route connecting those supply points to Asian markets.
A second, compounding factor is usually left out: the Red Sea. The same escalation triggered a suspension of Suez transits, affecting 10.7% of the global container fleet by TEU capacity, with Cape of Good Hope rerouting adding 10–14 days per voyage on Asia–Europe and Asia–US East Coast lanes. Two chokepoints closed at once, not one.
What the traffic data actually shows. The measured effect is real but more moderate than the drama suggests. In the first half of fiscal year 2026 (October 2025 – March 2026) the canal recorded 6,284 oceangoing transits, a 3.66% increase year on year and 224 more crossings in absolute terms. Cargo volumes rose about 5%, to 254 million tons. Daily averages moved from 34 vessels in January to 37 in March, with peak days surpassing 40.
The ACP also expanded supply rather than simply absorbing the shock. Its vice-president of finance stated that the authority had ramped up capacity by 15%, adding that the duration of the higher transit numbers depends on whether the rainy season arrives on time.
What priority access actually costs
This is where most coverage, including some that is otherwise careful, overstates the case.
| Period | Average auction price per slot |
|---|---|
| Oct 2025 – Feb 2026 | ~$55,000 (median) |
| Before the escalation | $135,000–140,000 |
| March – April 2026 | ~$385,000 |
| April – May 2026 | $385,000–425,000 |
| Documented record | $4 million (Neopanamax); $1.7 million (Panamax) |
The average premium roughly tripled. It did not move “above one million dollars” as a general level — that figure describes outliers, not the market.
The record has a name and a date. The Gas Virgo, a Singapore-flagged LPG tanker operated by Wanhua Chemical, transited on 15 April having paid $4 million; the ACP confirmed the payment after Bloomberg first reported it. The circumstances were specific: the canal’s administrator explained that a vessel carrying fuel originally destined for Europe was rerouted to Singapore, prompting its operator to pay the record premium to secure rapid transit.
Two mechanics are worth knowing. The ACP auctions only three to five transit slots per day; most vessels transit on advance reservations. And the authority’s own position is that the prices reflect neither congestion nor official tariff increases, but market-driven urgency among operators trying to avoid delay.
The correct reading for a logistics team: the base tariff has not changed, but the option value of jumping the queue has tripled and become volatile. Budget for it as a variable cost with a fat tail, not as a new price level.
Why the ACP is cutting draft
The water measure runs on a separate track, and its trigger is meteorological.
NOAA’s Climate Prediction Center has El Niño at Advisory status, with the event continuing and strengthening through the end of the year and a 97% chance of persisting into early spring 2027. The mid-July model ensemble overwhelmingly supports a strong event, projected to peak during October–December 2026, when 23 of 26 models forecast a very strong El Niño with a Niño-3.4 anomaly at or above +2.0 °C.
El Niño reduces rainfall across the canal watershed, and every transit depends on freshwater stored in Gatún Lake. The ACP’s stated basis for each step is present and projected Gatún Lake levels for the coming weeks, and it has framed the measures as part of a water-management strategy for safe, reliable and sustainable operation under current hydrological conditions while considering the potential development of El Niño.
The first cut was explicitly precautionary. The ACP emphasised that it was a preventive step based on lessons learned during the 2023–24 water shortage, with limited immediate effect on shipping.
A note on lake levels. Earlier in 2026 the reservoir was not merely healthy but full: the ACP opened a controlled discharge from the Gatún Dam on 6 February after the lake reached 88.93 feet, its maximum operational level, with the lake at 88.9 feet on 7 February against a five-year February average of 85.3. That figure is frequently cited as evidence that the draft cuts were made with a full reservoir — but it describes February, and the decisions were taken in June and July on the basis of levels and projections current then. Anyone modelling capacity should take the live figure from the ACP’s Gatún water-level dashboard rather than a headline number from earlier in the year.
What a draft cut does, and what it does not
Draft determines how much weight a vessel can carry without touching bottom. When the ACP lowers authorised draft, a Neopanamax vessel must sail lighter. Draft limits tons per vessel — the load factor — not the number of transits. These are two different levers and conflating them produces false conclusions.
On current data the ACP does not foresee the need for general transit restrictions in 2026. The slot reduction that did occur in July had a purely operational cause: dry chamber maintenance on the West Lane of the Gatún Locks from 18:00 on 21 July to 18:00 on 22 July, during which the East Lane remained operational but lockages took additional time. Panamax reservation slots dropped temporarily from 26 to 16, with full capacity restored from 23 July.
Attributing that window to “the drought” would be a category error. It was a works calendar.
Colón, the Free Zone and the capacity link
The Colón Free Zone (ZLC) is the largest free-trade zone in the Western Hemisphere and a re-export platform toward Latin America and the Caribbean. Its model — buy, consolidate, store, redistribute — depends on goods moving in and out smoothly, and that flow is anchored to canal capacity.
The transmission mechanism is worth stating precisely rather than in the abstract. Draft cuts do not reduce the number of vessels calling; they reduce tons per vessel, which for the ZLC means marginally higher landed cost per unit rather than fewer shipments. Auction pressure does not touch most ZLC-bound cargo at all, since container lines transit on advance reservations rather than bidding for slots. What does reach the zone directly is scheduled maintenance and any general transit restriction — and the ACP does not currently foresee the latter.
In other words, the ZLC exposure in 2026 is a cost-per-ton and scheduling question, not an access question. That is a materially different planning problem from 2023–24, when the constraint was the number of slots themselves.
Planning actions
- Model against the announced trajectory, not the current step. With 14.78 m scheduled for 15 August, cost and transit-time models should assume the most restrictive draft in the horizon rather than the one in force at booking.
- Treat priority access as a volatile variable cost. Budget against the ~$385,000–425,000 average rather than the $4 million headline, but with a tail allowance. Separate the spike from the base tariff.
- Calendar the maintenance windows. Lane outages cut slots for operational, not climatic, reasons.
- Review contract clauses. Incoterms, responsibility for freight surcharges and force-majeure wording should be examined in light of restrictions that are now announced in advance and therefore hard to classify as unforeseen.
- Sync inventories to expected capacity, not to an average year — particularly for ZLC-anchored operations.
- Track two calendars. The next ENSO diagnostic discussion and the next draft step fall within days of each other; the position can change materially inside a month.
Conclusions
The canal has closed the chapter of the acute 2023–24 crisis. What 2026 brings is a different combination: a geopolitical demand driver from the Hormuz and Red Sea closures, with auction premiums roughly tripled and occasional multimillion-dollar outliers, alongside preemptive water management under a confirmed and strengthening El Niño.
The signal is not the size of any single draft step. It is that draft restriction has become an ordinary management tool applied in advance, and that scarcity of priority access in 2026 reflects energy demand and scheduled works rather than a general restriction the ACP does not currently foresee.
For companies exposed to the Panamanian supply chain, that means planning against the most restrictive draft in the horizon, treating priority access as a volatile cost while the Hormuz pressure lasts, and checking the live figures rather than the headline ones. Both variables move faster than a quarterly planning cycle.
Verification checklist
| Item | Where to verify | Watch for |
|---|---|---|
| Current authorised draft | ACP Advisories to Shipping | Which step is in force today, not when announced |
| Gatún Lake level | ACP Gatún water-level dashboard | Live figure; earlier-year peaks are not current |
| ENSO status | NOAA CPC ENSO Diagnostic Discussion | Updated second Thursday monthly |
| Auction prices | ACP; Argus | Average versus outlier; 3–5 slots auctioned daily |
| Transit volumes | ACP fiscal-period releases | Daily average versus peak day |
| FY2025 results | ACP annual release | Figures in this article are unverified |
| Lane outages | ACP advisories | Operational cause, distinct from water measures |
Sources
Panama Canal Authority — Advisories to Shipping A-18-2026 and A-22-2026, fiscal-period results releases, statements by Administrator Ricaurte Vásquez and VP Finance Víctor Vial; NOAA Climate Prediction Center — ENSO Diagnostic Discussion, 9 July 2026; IRI/CCSR mid-July 2026 model ensemble; reporting by Bloomberg, La Prensa Panamá, Argus, gCaptain, Splash247, Seatrade Maritime and bne IntelliNews.
Operational figures in this article were current at the time of writing and change frequently; the draft schedule, lake level and auction prices should be checked against the ACP’s current advisories before use. This article is for general information only and does not constitute legal, tax or financial advice.
