Panama Canal Transit Caps: What Importers Need to Know for Q4

In early August, an LPG carrier paid $4.6 million at auction to jump the queue at the Panama Canal. A containership had gone for just under $4 million a few days before that. Those numbers are high, but likely to increase because they were set before the Panama Canal Authority announced the cuts that take effect next month.

On August 20, the Authority confirmed it will cap daily transits starting September 3rd and cut them again mid-month. If your goods move Asia to US East Coast, or you route anything through the canal on the Latin America trades, your transit times and your slot costs are both about to move. Below is what changes, what the water data actually says, and the decisions worth making in the next two weeks.

What changes, and when

The canal can handle roughly 40 vessels a day. Since June it's been running about 35. Starting the first week of September, the Authority caps that at 34, split between nine slots at the Neopanamax locks and 25 at the older Panamax locks. On September 15 the Panamax allocation drops to 23, taking the daily total to 32.

Through July, the canal was clearing close to 10 Neopanamax transits and about 25 Panamax transits on an average day. So the September 3 change costs the big-ships a single slot, while the Panamax side holds flat at first and then absorbs the real cut two weeks later. If your cargo moves on a larger container ship, your early September exposure is smaller than the headline number suggests. If it moves on a smaller vessel, a Latin America service or a niche string, mid-September is when this gets harder.

The auction rules change a day after the transit caps, on September 4. The Authority is sorting vessels into four groups: liquefied natural gas and liquefied petroleum gas carriers, dry bulk and general cargo, container ships alongside roll-on/roll-off vessels and car carriers and reefers, and tankers. Which groups can bid on a given day rotates, and the rotation keys off how many ships are actually sitting in the queue. Each operator gets one bid per day. At the Neopanamax locks, priority goes to fully loaded container vessels with the highest twenty-foot equivalent unit (TEU) capacity.

Read that last rule carefully. It's a signal about which cargo the canal intends to keep moving, and it favors the big, full container ships over everything else. That priority is also worth less than it first appears, because those same vessels are the ones losing draft across September and October. They'll win the slot, but unfortunately they’re carrying less cargo through it than they could a few months ago.

The water numbers behind the decision

Gatun Lake has hovered near 84 feet through August. Normal for this stretch of the calendar is about a foot higher, and on its own that gap wouldn't justify cutting transits. What forced the decision is how little water is arriving. So far this hydrological year the watershed has taken in 34 percent less rain than it should have, and inflows to the reservoir system are running 44 percent short.

Panama is in its rainy season right now. Levels are supposed to be climbing toward a December peak above 87 feet. They aren't climbing the way they should be.

The National Oceanic and Atmospheric Administration (NOAA) expects the current El Niño to intensify into a Super El Niño by October, and puts the odds at close to 70 percent that it becomes the strongest on record by year end. The Authority made its call on that forecast rather than on today's lake level, which is a meaningful difference from 2023. That year the restrictions chased a drought that was already underway, and canal traffic fell roughly 36 percent before the system stabilized. Acting three weeks early gives everyone in the chain a little more room to plan.

Worth keeping in mind that back in May, canal officials went on the record with Reuters ruling out transit limits for 2026. That position has flipped in three months, so treat any guidance about the rest of the year as provisional. The Authority says more restrictions may follow, and it retains the option to suspend the reservation system in whole or in part if conditions deteriorate.

What to do in the next two weeks

Rebuild your transit-time assumptions before you promise anything to a retail partner. If you're quoting East Coast arrival dates for holiday inventory using spring transit times, you're going to miss. Add the realistic queue exposure to your planning calendar now, while you can still shift a purchase order or split a shipment, instead of explaining a chargeback in November.

Price US West Coast alternatives if you might have time-sensitive cargo. Knowing the cost and the transit difference turns a panic decision in October into a comparison you already ran. For a lot of Asia origin cargo, discharging on the West Coast and moving inland by rail or truck is an option, but only if your distribution network can absorb it.

Decide in advance what's worth expediting. When slots get scarce, transit bottlenecks will increase. Knowing your expedite options via West Coast is step 1, knowing what products are worth it will help you make that call in an hour instead of a week.

Look at what you're putting in the box. Draft limits cap weight, and heavy-weight cargo will be the first to be deprioritized. Tile, appliances, batteries, canned goods and bottled products all feel this before apparel does. If you ship heavy, talk to your forwarder about consolidation strategy and load planning now rather than after you need to get on a vessel

The part nobody can plan around

This is the third round of canal restrictions in four years, and Panama's cities draw drinking water from the same reservoir the locks depend on. A route that carries about 5 percent of world seaborne trade now comes with a recurring hydrological risk, and the importers who fare best are the ones who stopped treating the canal as a fixed input and started treating it as one option among several.

Flexport moves goods across 135 countries and gives you a single view of what's actually happening to your freight, so when a lane closes or a queue builds you find out from your own dashboard rather than from a customer asking where their order is. If you want to pressure-test your Q4 canal exposure, talk to a Flexport expert.