Every guest who books a boat trip weeks in advance asks some version of the same question, usually near the end of the conversation and usually a little apologetically. What if the weather is bad? It is a fair question, and most operators answer it vaguely. This is our honest answer, written by people who cancel their own departures several times a year and would rather you knew the rules before you paid. If you are still choosing a route, start with our Lan Ha Bay overview.
Who actually decides that a boat stays in port
This is the part almost nobody explains, and it changes how you should read every cancellation policy you compare. When a storm approaches the Gulf of Tonkin, the decision to stop departures is not made by the tour company. It is made by the authorities, and it applies to every boat in the harbour at once — ours, the large cruise lines, the day boats, the ferries.
The Hai Phong Civil Defense Command, acting through the city's Department of Agriculture and Environment, issues that order, and it is enforced on the water by the Border Guard. No operator can sail against it. That is worth knowing because it means a cancellation is not a judgement call someone made to save money. It also means that if one company tells you they will still run when others have stopped, something is wrong with what they are telling you.
Separately from an official ban, we sometimes cancel on our own when conditions are legal but poor. Two metres of swell will not stop a boat leaving, but it will make a day on the water miserable and a night on board worse. We would rather move your trip than sell you that day.
What we do when a trip is cancelled before departure
We contact you directly as soon as the decision is made, by whichever channel you booked through. We do not wait for you to notice a notice on our website, and we do not leave it to the morning of departure if we already know the night before.
You then have two options, and both are yours to choose, not ours to assign. You can move the trip to any date within the year, at no extra cost. Or you can take a full refund, processed within 7 to 15 working days.
This applies to cancellations made after an official ban is in place. If you choose to cancel earlier, based on a forecast alone and before any ban has been announced, our standard cancellation policy and fees apply instead.
If you have booked several days with us and only one is affected, the rest of the itinerary continues as planned and only the cancelled portion is settled. Most guests in that situation choose to swap the bay day for something on the island, and we help arrange it at no extra cost.
What happens if the weather turns while you are on board
This is rarer than people imagine. Typhoons in this region are tracked days in advance, so a boat almost never leaves into one. What does happen is that a forecast worsens faster than expected and a trip gets shortened.
In that case the boat returns to a sheltered anchorage or back to harbour, and the crew decides — not the guests, and not the office. It is not negotiable, and we would ask you to accept it quickly even if the sky above you looks fine at that moment. The sky above you is not the problem; the sea between you and the harbour is.
For a trip cut short after departure, the exact refund depends on how much time you actually spent on the water, and we work it out with you directly rather than applying a fixed formula. If this happens to you, contact us as soon as you are back on land and we will settle it case by case.
When is the actual storm season in northern Vietnam?
The official Vietnam typhoon season in the Gulf of Tonkin generally runs from June through October. The heaviest rainfall and strongest winds typically occur during August and September. However, this is just a general pattern, as some years see minimal disruptions while others face multiple storms in a single month.
For reliable real-time updates, you can check the official National Center for Hydro-Meteorological Forecasting at https://www.nchmf.gov.vn/kttv/ (accessed August 2026).
What that season does not mean is that the bay is closed for five months. Between storms the weather is often excellent, and late summer brings the warmest water of the year. A storm affects a few days at a time, not the whole month, and the days on either side of it are frequently the clearest you will see all season. For the full month-by-month picture beyond storm season, see our best time to visit Cat Ba Island guide.
How to plan around it without giving up the trip
Put the bay early in your Vietnam itinerary
This is the single most useful thing you can do, and almost nobody does it. If the bay sits on day two of a two-week trip, a cancelled departure can be moved to day nine and you lose nothing. If it sits on the last day before your flight home, there is nowhere to move it to.
Our Cat Ba Island guide sets out what else there is to do on the island, which is what makes an early slot flexible rather than wasted. If you want a ready-made schedule to build around it, our 3-day Cat Ba itinerary shows how the days fit together.
Leave one spare day in the region
A single buffer day near Cat Ba or Hai Phong turns a cancellation from a lost experience into a rescheduled one. It costs you one night of accommodation and it is the cheapest insurance in the whole trip.
Book the overnight rather than the day trip if your dates are tight
An overnight route has more room to absorb a bad morning, because the schedule can shift within the trip. A day tour either runs or it does not.
Check the forecast three days out, not three weeks out
Long-range forecasts for this coast are close to useless for planning, and watching them a month ahead only causes anxiety about a trip that will probably be fine. Three days is when the picture becomes real.
What to ask any operator before you book
Asking a few simple questions will reveal exactly how a company treats its customers during a crisis. We highly encourage you to ask these questions to us and any other operator you are considering.
Always ask what exact percentage is refunded if they cancel, and how many days the transfer takes. You should also verify if changing your travel dates incurs any hidden penalty fees. Furthermore, ask what financial compensation happens if the trip is abruptly cut short on the water.
An operator who gives you clear, numerical answers is demonstrating reliable and professional service. If they reply with vague phrases like "subject to conditions," you should view that as a massive red flag.
Common questions
Is it safe to book a trip between June and October?
Yes, these months often feature beautifully clear skies and warm waters for swimming. The vast majority of departures during this window run exactly as scheduled without any issues. Simply plan your trip with a buffer day rather than avoiding the entire summer season.
Does travel insurance cover a weather cancellation?
Many policies do, but the terms vary widely and we cannot advise on yours. Check whether your policy covers trip interruption caused by weather, and read what documentation it requires — we can provide written confirmation of a cancellation if your insurer needs it.
Can I decide myself to go out anyway?
Not when there is an official ban, and not against the crew's decision at sea. This is the one part of the trip where nothing is negotiable.
When will I be notified about a cancellation?
We will inform you the moment we receive the official notice from the local port authority. Since storm tracks are closely monitored, we usually send notifications the day before rather than the morning of your trip.
What is the bottom line for travelers?
Weather cancellations happen a handful of times a year, the decision is rarely ours to make, and the way an operator handles those days says more about them than any photograph on their website does. Plan the bay early, keep one spare day, and ask the four questions above of whoever you book with.
If you want to talk through dates before committing, or you are weighing a day trip against an overnight, our routes and current departures are on Beka Travel.
