Panama Canal to Cut Daily Ship Transits Ahead of El Niño
The Panama Canal Authority (ACP) has told shipping companies it will reduce the number of ships allowed through the canal each day from 36 to 32, starting 15 September 2026. The lower limit will be phased in from 3 September. The ACP says the measures are designed to keep service reliable and protect freshwater supplies for drinking. The canal runs 24 hours a day, 365 days a year, currently handles about 14,000 ships annually, and generates roughly $3bn (£2.2bn) a year for Panama, making it a key source of national income.
The decision is tied to El Niño, a periodic warming of sea surface temperatures that disrupts global weather patterns. Forecasts suggest this year's El Niño could be one of the strongest on record, with effects intensified by climate change. In 2023, during the last El Niño cycle, Panama saw its driest October since records began in 1950, which prompted the ACP to cut vessel transits through the waterway.
Those earlier restrictions were severe. Drought during the 2023–2024 El Niño period forced the canal to reduce daily transits to as few as 24 vessels per day, according to maritime trade reporting. Before that disruption, the ACP had already put in place a broader set of water management tools, including limits on draft — the depth of water a ship needs to float safely — and on the number of daily transits. If a drought at the canal lasts longer than 12 months, the ACP may need to revise its weather modeling, which could trigger additional restrictions.
The current reduction plan matches warnings the Panama Canal Administrator had previously issued. The administrator cautioned that the canal, then moving 35 to 36 ships per day, would need to lower that to between 32 and 28 transits per day to prepare for climate-related impacts. The phased reduction beginning 3 September starts that adjustment.
For maritime trade, the stakes are considerable. The canal is a critical route for global shipping, and cutting daily transits from 36 to 32 removes roughly 11 percent of available daily capacity. That tightens vessel scheduling, raises the likelihood of congestion at anchorages, and increases the prospect of higher freight costs. Shipping firms will need to weigh whether to accept delays, reroute via longer passages, or adjust cargo schedules to absorb the reduced throughput.
The broader context here is the canal's dependence on freshwater. Each ship passing through the canal's lock system — a series of chambers that raise and lower vessels between sea level and the canal's interior — requires enormous volumes of water drawn from Gatun Lake, which depends on regional rainfall. When El Niño suppresses precipitation, lake levels fall. The canal faces a structural tension between its operational capacity and the availability of water for both transit operations and local human consumption. The ACP's current measures prioritize safeguarding drinking water, but that allocation choice puts a hard limit on commercial throughput.
What happens next depends on how this El Niño event develops. Forecasts suggesting this could be one of the strongest El Niño events on record raise the probability of further restrictions. Should drought conditions persist, the ACP's modeling revisions could push daily transit limits even lower, toward the 28-transit threshold the administrator previously outlined. Shipping firms and supply chain operators will be watching the phased implementation in September for early signals of whether deeper cuts are on the way.
