Hurricane Polo Impact on Mexican Ports: Status and Cargo Effects
Hurricane Polo reached category 5 on September 22, 2026, forcing Mexico's Navy Secretariat to close navigation at seven Pacific ports. Manzanillo and Lazaro Cardenas, the two main gateways for trade with Asia, are operating under restrictions based on vessel size. Larger container cargo keeps moving; smaller vessel traffic remains suspended.
- Polo reached category 5 with a central pressure of 892 mbar, the second most intense Pacific hurricane by pressure after Patricia (Wikipedia / Milenio, 2026).
- SEMAR closed navigation at six ports on September 23; with Barra de Navidad added, the restriction covers seven ports (Excelsior, 2026).
- Lazaro Cardenas closed to vessels larger than 500 GT starting at 19:00 on 09/22; APM Terminals keeps gate and rail operations active.
- Manzanillo restricted only vessels smaller than 500 GT; larger ships kept loading containers.
- Polo's track runs parallel to the coast without making landfall, with possible impact on Baja California Sur between September 28 and 29 (Conagua/SMN).
I have spent ten years watching how a category 5 hurricane can paralyze a port before it ever makes landfall. Polo followed the same pattern: the uncertainty does not come only from the storm's eye, it comes from the question every shipping agent, importer, or terminal operator asks right now: can I move my cargo today, or do I have to wait?
Operational climate risk is exactly that: the probability that a condition (waves, wind, visibility) will prevent a specific operating window, not the certainty of a disaster. In this piece I lay out what we know so far about Polo, port by port, so cargo decisions get made on data instead of rumor.
What happened to Mexico's Pacific ports because of Hurricane Polo
Hurricane Polo rapidly intensified on September 22, 2026, to category 5, with sustained winds between 252 and 260 km/h, a strengthening pace comparable to Otis in 2023 (Milenio / El Universal, 2026). Mexico's Navy Secretariat responded by closing navigation at six Pacific ports and, one day later, added Barra de Navidad to the list.
The central pressure of 892 mbar makes Polo the second most intense hurricane on record in the Mexican Pacific by atmospheric pressure, behind only Patricia in 2015 (Wikipedia, 2026).
That intensity explains why authorities acted before the system made landfall: the waves generated by a hurricane at this category travel much farther than the storm's center itself.
For anyone depending on a call at Manzanillo or Lazaro Cardenas, the closure was not a sudden surprise. It was the expected result of a system that, according to the National Hurricane Center, showed a sustained intensification track starting 48 hours earlier.
Port-by-port status
As of September 25, seven Pacific ports in Mexico maintain some form of navigation restriction due to Polo, though the scope varies by vessel size and by the type of operation at each terminal.
| Port | Restriction | Affected vessel type |
| Manzanillo (Colima) | Closed to smaller vessel traffic | Under 500 GT |
| Lazaro Cardenas (Michoacan) | Closed to larger vessel traffic | Over 500 GT |
| Acapulco (Guerrero) | Closed to larger vessel traffic | Over 500 GT |
| Zihuatanejo (Guerrero) | Closed to larger vessel traffic | Over 500 GT |
| Puerto Marques (Guerrero) | Closed to smaller vessel traffic | Under 500 GT |
| Puerto Escondido (Oaxaca) | Closed to smaller vessel traffic | Under 500 GT |
| Barra de Navidad (Jalisco) | Closed to smaller vessel traffic | Under 500 GT |
Manzanillo
The Port Captaincy closed navigation only for vessels under 500 GT. Larger ships kept operating container cargo, though vessels already docked reinforced their mooring lines, as El Pais (2026) reported in its live coverage of the hurricane.
Lazaro Cardenas
The closure for vessels over 500 GT took effect at 19:00 on September 22 and remains in place until maritime authorities issue further notice. APM Terminals confirmed that gate operations and rail cargo movement continue despite the maritime restriction.
Acapulco, Puerto Marques, and Zihuatanejo
Guerrero holds three of the seven restricted ports: Acapulco and Zihuatanejo closed to larger vessels, Puerto Marques closed to smaller ones. Zihuatanejo and Ixtapa reported waves of 4 to 5 meters and damage to docks and to the pier at Las Gatas beach.
Puerto Escondido and Barra de Navidad
Both ports, in Oaxaca and Jalisco respectively, maintain closures for vessels under 500 GT. Barra de Navidad was added to the list a day after the rest, once Polo's track confirmed its proximity to that stretch of coast.
What "closed to larger" and "closed to smaller" vessels means
The 500 GT (gross tonnage) threshold splits the fleet between smaller vessels, such as fishing and tourist boats, and larger vessels, such as container ships and bulk carriers. That number decides who can sail and who must wait at each closed port.
A closure to smaller vessel traffic does not stop large-scale commercial cargo: ships that move containers keep operating, as is the case in Manzanillo. A closure to larger vessel traffic, on the other hand, does stop those ships, though it does not necessarily paralyze the entire terminal.
Here is the nuance that confuses people who don't run port operations daily: closing navigation is not the same as closing the terminal. Lazaro Cardenas closed to larger vessels, but APM Terminals kept dispatching cargo by land and rail. Port operations and maritime navigation are two separate decisions, made by separate authorities.
Why ports close: waves, wind, and visibility
A port can close even when a hurricane never makes landfall, because what threatens a docking maneuver is not the storm's center but the waves, sustained wind, and visibility that system generates hundreds of kilometers away. Polo never touched Mexican soil and still forced seven closures.
Typical operating thresholds
Port captaincies in Mexico suspend operations when waves exceed ranges that compromise docking maneuvers, when sustained wind exceeds safe limits for gantry cranes, or when visibility drops below the minimum for pilotage. None of those three thresholds requires the hurricane to make contact with land.
At i4sea we work with resolution of 1 to 3 kilometers, calibrated to the exact point of the asset, versus the roughly 25-kilometer resolution of a generic public advisory. That difference matters because the waves that close a berth in Manzanillo can differ from those affecting Lazaro Cardenas the same day, even under the same system.
| Coastline | Reported wave height |
| Guerrero (Zihuatanejo / Ixtapa) | 4 to 5 meters |
| Colima and Jalisco (Manzanillo / Barra de Navidad) | Reinforced mooring due to elevated waves |
| Michoacan (Lazaro Cardenas) | Preventive restriction on larger vessel traffic |
Impact on logistics and foreign trade
Manzanillo and Lazaro Cardenas handle a significant share of Mexico's foreign trade with Asia, so any restriction at these two ports is felt well beyond the Pacific coast. The partial good news is that, so far, larger container cargo keeps moving at both.
Manzanillo and Lazaro Cardenas, gateways to trade with Asia
While Manzanillo restricted only smaller vessel traffic, Lazaro Cardenas closed to vessels over 500 GT. That asymmetry between two ports just 200 kilometers apart shows why a hurricane does not affect an entire coastline equally: approach angle and local wave conditions change port by port.
ASIPONA measures at terminals
ASIPONA Manzanillo reinforced its preventive protocols: it limited container stacking to a maximum of five containers high, banned placing empty containers on top of stacks, moved yard equipment into storm position, and secured loose materials and vehicles within the port grounds (AFmedios, 2026).
What importers and exporters can expect
Anyone with cargo scheduled for Manzanillo or Lazaro Cardenas in the coming days should expect delays in berth scheduling, not necessarily a full operational shutdown.
The practical recommendation is to confirm each vessel's status directly with the carrier or customs broker, since the restriction depends on vessel size. It is worth reviewing how a port closure translates into demurrage when a docking window is missed.
Reported damage and authorities' response
Zihuatanejo and Ixtapa show the most visible damage reported so far: waves of 4 to 5 meters hit docks, coastal restaurants, and the pier at Las Gatas beach, along with notable erosion at several beaches in the area (Sur Acapulco / Quadratin, 2026). Local fishermen secured their boats before the waves reached their peak.
The Navy Secretariat activated Plan Marina as its institutional response, coordinating prevention and relief work along the Pacific coast. The National Civil Protection Coordination, the National Meteorological Service, and the National Water Commission are monitoring the system's evolution together with the Federal Electricity Commission, which is reviewing power infrastructure in exposed coastal areas.
Residents in affected areas can report emergencies to 800 MARINA1, a line set up by the Navy Secretariat during the contingency. The National Meteorological Service keeps updates on the system's track.
Track and what comes next for northwestern ports
Polo is moving on a track parallel to the Mexican coast, without having made landfall as of this update. Conagua and the SMN project a possible approach to Baja California Sur between September 28 and 29, 2026, which would keep the ports of La Paz and Cabo San Lucas on alert.
Mazatlan and Guaymas, farther north along the Pacific coast, are tracking the system's evolution with no active restrictions so far, though it is worth monitoring official bulletins as the hurricane moves.
The 2026 season, influenced by El Nino, was forecast by the SMN to bring between 18 and 21 cyclones in the Pacific, of which 4 to 5 would reach category 3 to 5 (El Pais / SMN, 2026). Polo confirms that projection before September even ends.
Polo compared to other hurricanes that affected Mexican ports
Comparing Polo to previous events helps put its intensity in perspective without alarmism: each hurricane left a distinct pattern of port disruption, and that pattern is what allows operators to anticipate decisions the next time around.
| Hurricane | Year | Category | Main area |
| Patricia | 2015 | 5 (strongest on record in the Pacific) | Jalisco / Colima |
| Otis | 2023 | 5 (rapid intensification) | Acapulco |
| John | 2024 | 3 | Costa Chica, Guerrero |
| Polo | 2026 | 5 (892 mbar, no landfall so far) | Central Pacific, seven ports |
Polo shares its intensification speed with Otis, but differs on a key point: as of this update, its track ran parallel to the coast instead of striking it directly. That difference explains why the reported damage, though real in Zihuatanejo, is not comparable to the destruction Otis caused in Acapulco in 2023.
Frequently asked questions
Which ports are closed because of Hurricane Polo?
Seven Pacific ports in Mexico maintain restrictions: Manzanillo, Lazaro Cardenas, Acapulco, Zihuatanejo, Puerto Marques, Puerto Escondido, and Barra de Navidad, each with a different threshold based on vessel size (Excelsior, 2026).
Can a container ship leave Manzanillo right now?
Yes, in Manzanillo the closure applies only to vessels under 500 GT. Larger container ships kept operating cargo during the contingency, as El Pais confirmed in its coverage from September 24.
Is Lazaro Cardenas still receiving cargo by land?
Yes. Although the port closed navigation to vessels over 500 GT starting September 22, APM Terminals keeps gate operations and rail movement active for cargo already at the terminal.
Why do ports close if the hurricane never makes landfall?
Because the waves, sustained wind, and visibility a hurricane generates travel much farther than its center. Those three conditions alone are enough to make a docking maneuver unsafe, even if the system never reaches the coast.
When could Polo reach Baja California Sur?
Conagua and the National Meteorological Service project a possible approach between September 28 and 29, 2026, which would keep the ports of La Paz and Cabo San Lucas under preventive alert.
If your operation depends on a docking window in Manzanillo or Lazaro Cardenas, I understand the pressure of deciding without full information. That is why at i4sea we monitor more than 100 critical assets across Latin America and Europe with over 10 years of proprietary climate reanalysis, covering 18 hydrometeorological and oceanographic hazards at 1 to 3 kilometer resolution.
I invite you to review how climate risk management works in the port sector and what it takes to implement climate intelligence in your port operation in 90 days.
You can also see how these decisions fit into daily operational windows and terminal scheduling. To anticipate your next docking window with proprietary data, request a free climate risk diagnostic.
Sources
Wikipedia / Milenio, 2026: Polo's category 5 status, 892 mbar, second most intense Pacific hurricane by pressure. https://es.wikipedia.org/wiki/Hurac%C3%A1n_Polo
Excelsior, 2026: SEMAR closes six Pacific ports as Polo advances. https://www.excelsior.com.mx/nacional/semar-cierra-seis-puertos-pacifico-avance-huracan-polo
El Pais, 2026: live coverage of Hurricane Polo, status of larger and smaller vessels by port. https://elpais.com/mexico/2026-09-24/el-huracan-polo-en-vivo.html
AFmedios, 2026: ASIPONA Manzanillo reinforces preventive measures against Hurricane Polo. https://www.afmedios.com/asipona-manzanillo-refuerza-medidas-preventivas-ante-huracan-polo/
National Meteorological Service (Conagua): official monitoring of the track and the 2026 cyclone season forecast. https://smn.conagua.gob.mx/es/
National Hurricane Center (NOAA): international tracking of Polo's path and intensity. https://www.nhc.noaa.gov/
Navy Secretariat: Plan Marina, prevention and relief actions in affected coastal areas. https://www.gob.mx/semar/acciones-y-programas/plan-marina