Panama Canal Cuts Daily Transit Slots, September 2026

Market data as of 5 September 2026. Rates move weekly. For the current position on your own lanes, use the rate explorer.

Key takeaways

From 3 September the Panama Canal cut daily transit slots to nine at the Neopanamax Locks and 25 at the Panamax Locks, with Panamax falling again to 23 on 15 September.
The deeper draft cut to 47.5 feet, originally due on 3 September, has been postponed to 1 October — the Authority is rationing slots rather than loading depth for now.
Booking rules changed on 30 August for transit dates from 13 September, restructuring the Neopanamax auction and blocking most double allocations on the same date.
Scarcity is already visible in the price of a slot, and some carriers are weighing low-water surcharges on canal routings.

The Panama Canal Authority has moved from restricting how deep ships can load to restricting how many can transit at all. For anyone routing Asia–US East Coast cargo through the canal, that is the more consequential lever, and it took effect in the first week of September.

What changed

In an Advisory to Shipping issued on 20 August 2026, the Authority set out temporary modifications to the locks' transit capacity, including adjustments to its daily auctions. Effective 3 September, daily slots at the Neopanamax Locks fell to nine, and daily slots at the Panamax Locks to 25. From 15 September, Panamax availability drops again, to 23.

The stated reason is water. "Despite the arrival of the rainy season in Panama, and the water-saving measures implemented by the Panama Canal to mitigate the adverse effects of the El Niño event, current watershed conditions, including below-expected precipitation in the Canal watershed, require additional action to support the long-term sustainability of transit operations," the Authority said.

Draft held, slots cut

The sequence matters, because the Authority reversed course on part of it. On 5 August it announced that the maximum authorised draft for Neopanamax transits would fall to 48.0 feet (14.63 metres) from 26 August, with a further reduction to 47.5 feet (14.48 metres) from 3 September.

On 20 August, citing the level of Gatun Lake and updated weather projections, it postponed both: the 48.0 foot limit moved to 2 September, and the 47.5 foot adjustment was pushed all the way to 1 October.

So draft is holding at 48.0 feet while slot availability takes the strain instead. For a container operator that is a meaningful distinction. A draft restriction costs you cargo intake on a sailing you still make. A slot restriction costs you the sailing.

Check which constraint bites your service

Most container services on the Asia–US East Coast rotation are not draft-limited at 48 feet. They are slot-limited. If your carrier has been explaining schedule risk in terms of draft, that is now the wrong constraint to be discussing — ask about their booking slot position for the relevant transit window instead.

New booking rules

A second advisory, on 28 August, changed how the remaining slots are allocated. The modifications took effect on 30 August for booking dates from 13 September, and the Authority framed them as improving flexibility and spreading capacity more evenly across market segments while encouraging efficient water use.

Two changes stand out. From 3 September the daily auction slot for Neopanamax, Supers and Regular vessels is organised into four groups. And customers who already hold a booking slot for a given transit date through existing allocation routes are not eligible for an additional slot on that date unless no other bidder competes for it.

The intent is to stop a small number of well-capitalised operators sweeping the auction. The practical effect for a forwarder is that slot access is now a distribution question as much as a price question.

What it costs

The scarcity is already priced. FreightWaves reported on 31 August that South Korea's SK Gas bid $5.3 million for an auctioned transit slot for the LPG carrier G. Spirit on 1 September — the highest reported price for a canal slot on record.

That is a gas carrier, not a container ship, and single auction records are a poor guide to what a liner service pays. But it is a clean signal of how tight the waterway is when nine Neopanamax slots a day are on offer.

The container-side consequence is the one to watch. FreightWaves reported that some carriers are considering low-water surcharges for Panama transits. Should those be filed, they would land on Asia–US East Coast services routed through the canal rather than those going via Suez or around the Cape — a familiar pattern, and one worth checking against the rules for what makes a surcharge defensible. A canal-related charge should name the trigger, the mechanism and the condition that removes it.

What to do now

For the next few weeks, four questions are worth putting to your carrier on any canal-routed booking.

Is this service slot-constrained? Ask whether the string holds confirmed reservations for your transit window, or is arriving on availability.
Is a canal surcharge filed or pending? Get it in writing before treating a quote as all-in, and ask what removes it.
What is the alternative routing, and what does it cost in days? A Suez or Cape routing to the US East Coast changes the transit, and therefore the inventory position you promised your customer. The cost structure of longer routings is well understood; the point is to price it deliberately rather than discover it.
What is the schedule buffer? If Panamax slots fall to 23 on 15 September as scheduled, the second half of the month is tighter than the first. Build that into ETAs you are giving out now.

The Authority has been direct about the underlying position: while the water deficit continues, a confirmed reservation is the only means of guaranteeing a specific transit date. Treat any promised date without one as an estimate.

Frequently asked questions

How many daily transit slots does the Panama Canal have as of September 2026?

From 3 September 2026 the Panama Canal Authority reduced daily slots at the Neopanamax Locks to nine and at the Panamax Locks to 25. Panamax slots drop again to 23 from 15 September. The reductions were announced in an Advisory to Shipping on 20 August 2026 and are a response to below-expected rainfall in the canal watershed.

Has the Panama Canal reduced draft limits again?

Not as originally scheduled. The Authority had planned to cut the maximum Neopanamax draft to 47.5 feet on 3 September, but on 20 August postponed that adjustment to 1 October. The 48.0 foot (14.63 metre) limit was postponed by a week to 2 September. Draft is currently holding at 48.0 feet while transit capacity, not vessel loading, absorbs the constraint.

Will Panama Canal restrictions add surcharges to my US East Coast freight?

Possibly. FreightWaves reported on 2 September that some carriers are considering low-water surcharges for Panama Canal transits. If introduced, those would add cost specifically to Asia–US East Coast services that route through the canal rather than via Suez or around Africa. Ask your carrier whether a canal-related charge is filed for your service before accepting a rate as all-in.

Do I need a booking slot to transit the Panama Canal?

You do not strictly need one, but the Authority has been explicit that a confirmed reservation is the only way to guarantee a specific transit date. Vessels arriving without a reservation may wait, depending on demand and available capacity. With daily slots reduced, the value of a confirmed booking rises and so does the price paid for one at auction.

Why is the canal short of water during the rainy season?

The Authority stated that despite the arrival of Panama's rainy season and the water-saving measures already in place, precipitation in the canal watershed has come in below expectations. Each lockage consumes fresh water from Gatun Lake, so the constraint is the watershed's ability to refill it — which rainfall timing and volume, not the calendar, determine.