Panama Canal to Cap Daily Ship Transits Amid El Niño Drought

Transit Restrictions Announced

The Panama Canal Authority announced on Thursday that it will limit the number of ships passing through the waterway starting in September. The decision comes in response to low rainfall and an intensifying El Niño weather pattern affecting the region.

Under the new measures, daily transits will be capped at 34 vessels beginning September 4. This limit will be further reduced to 32 vessels per day starting September 15. These restrictions represent a reversal of earlier assurances provided by administration officials in May, who told Reuters that no such restrictions were planned for the current year.

Water Shortages and El Niño

The Panama Canal relies on a system of water-filled locks to move ships between the Atlantic and Pacific oceans. These locks require significant amounts of freshwater to operate, making the waterway dependent on consistent rainfall to maintain operational levels.

Data indicates a significant drop in precipitation in the canal's watershed, with rainfall from May to August 2026 measuring 34% below historical averages. The drought is driven by El Niño, a weather pattern that warms surface temperatures in the central and eastern Pacific Ocean. The Panama Canal Authority is implementing these rations to prepare for a longer and more severe El Niño season rather than waiting for the drought to reach a critical point.

Impact on Global Trade and Logistics

The Panama Canal is a strategic waterway that carries approximately 5% of global maritime trade. Typically, the canal averages between 35 and 40 transits daily. The reduction to 32 vessels represents a notable decrease in capacity for the 82-kilometer passage.

This marks only the second time in the 110-year history of the canal that the authority has been forced to reduce daily transits. To manage the limited slots, vessels are expected to be allocated according to cargo type, with larger ships receiving priority.

Future Outlook

Weather forecasts suggest that the El Niño event is expected to strengthen significantly toward the end of 2026. The Panama Canal Authority's decision to ration vessel passage is a preemptive measure to address expected water shortages as the drought persists.