Hurricane Polo: the Mexican coast now under a hurricane warning
What happened
On 22 September 2026 the Foreign, Commonwealth and Development Office added information about Hurricane Polo to its travel advice for Mexico. The warning is specific about where and what. Hurricane Polo is bringing heavy rainfall across Mexico's south-western coast, including parts of the states of Guerrero, Michoacan and Oaxaca. Guerrero is the state that contains Acapulco; Oaxaca includes popular coastal spots such as Puerto Escondido and Huatulco. Heavy rain is expected to continue during the week of 21 September, and the FCDO says it may cause life-threatening flooding and landslides. A hurricane warning is in place. The advice asks travellers to monitor local and international weather updates, naming the US National Hurricane Center and the Mexican Meteorological Service as sources, and to follow the instructions of local authorities and tour operators. It also points to the FCDO's wider guidance on extreme weather and natural hazards, which covers how to prepare for travel during hurricane season and what to do ahead of a storm. This is the second named storm to appear in Mexico's travel advice this month. Information about Hurricane Marie was added on 3 September and removed on 11 September once it had passed.
Why this matters
The phrase that matters most in this update is "life-threatening flooding and landslides". With hurricanes, people naturally think about wind. In practice, water causes most of the deaths. Rain falling on steep coastal terrain runs off fast, rivers rise quickly, and hillsides that have been soaked for days give way with very little warning. Mexico's Pacific coast is exactly that kind of landscape: mountains close to the shore, small towns on winding roads, and communities that can be cut off when a single route is blocked. For UK travellers, the consequences are usually practical rather than dramatic. Airports close. Roads flood. Power and mobile networks drop out. Hotels evacuate guests to higher floors or inland. Journeys that normally take two hours take a day, or cannot be made at all. If you take regular medication, that is when a short holiday supply becomes a real problem. Pharmacies may be shut, roads impassable and your return flight moved. Anyone who depends on refrigerated medicines, such as some insulins, has the added difficulty of power cuts. The official hurricane season in the eastern Pacific runs from mid-May to the end of November, so this is not an unusual event so much as a predictable seasonal risk arriving on a specific week.
What the evidence actually says
The FCDO update is a warning based on official forecasts. It is a statement of risk, not a prediction of what will happen in any particular place. Storm tracks change. A hurricane warning means conditions are expected within a defined area and time, and the detail of where the worst rain falls will shift over hours. That is exactly why the FCDO points people to the US National Hurricane Center and the Mexican Meteorological Service rather than trying to give a fixed picture itself. Those two sources are the right ones, and they update far more often than travel advice does. A government travel advice page might change once a day. Forecast centres update several times a day. It is also important to read the geography carefully. The warning names Guerrero, Michoacan and Oaxaca. That is a large stretch of coastline, and it does not mean the whole of Mexico is affected. Cancun, on the Caribbean side, is a different coast facing different weather systems entirely. Equally, the absence of a place from the list does not guarantee safety. Heavy rain moves inland. The FCDO has not advised against travel to these states because of the storm. It has added a warning. Those are meaningfully different things, and it affects insurance.
Practical advice
If you are travelling to Mexico's Pacific coast in the coming days, or are already there, these steps are worth taking. - Check the US National Hurricane Center and the Mexican Meteorological Service daily, and more often as a storm approaches. They are more current than any travel page. - Do exactly what local authorities and your hotel or tour operator tell you. Evacuation instructions are not optional and are usually issued with good reason. - Contact your airline and accommodation directly about changes rather than waiting to be contacted. - Check your travel insurance covers weather disruption, and know how to claim. Keep receipts. - Charge phones and power banks whenever you have electricity, and keep a torch to hand. - Keep bottled water and some food in your room. Supply runs are difficult during and after a storm. - Take extra medication with you, in hand luggage, in original packaging with a copy of your prescription. Assume you may be delayed several days. - If you use refrigerated medicines, ask your hotel about backup power and consider a cool bag. - Never drive or walk through floodwater. The depth and the state of the road underneath cannot be judged from the surface. - Register your presence with someone at home and check in regularly.
What to know
The FCDO updated its Mexico travel advice on 22 September 2026 to warn about Hurricane Polo, which is bringing heavy rainfall to parts of Guerrero, Michoacan and Oaxaca on the south-western coast. Rain was expected to continue through the week of 21 September, with a risk of life-threatening flooding and landslides, and a hurricane warning in place. The FCDO has not advised against travel to these areas, but asks travellers to follow local authorities and tour operators and to monitor the US National Hurricane Center and the Mexican Meteorological Service. The main risks for visitors are flooding, landslides, road closures, power cuts and flight disruption. Water, not wind, causes most harm. If you take regular medication, travel with a generous surplus in your hand luggage and plan for delays of several days. Sources: GOV.UK, "Mexico travel advice: warnings and insurance", updated 22 September 2026, https://www.gov.uk/foreign-travel-advice/mexico/warnings-and-insurance; GOV.UK, "Mexico travel advice", Foreign, Commonwealth & Development Office, https://www.gov.uk/foreign-travel-advice/mexico This article is for general information and does not replace advice from a doctor, pharmacist, travel health clinic or other qualified professional. Always check the latest FCDO travel advice before you travel.
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