Every year, people get caught out by the tides around Hilbre Island. The water comes in fast across the Dee Estuary, and what looked like a clear sandy path twenty minutes ago can be knee deep before you know it. It's a frightening experience, but if you know what to do, you'll be fine.
The single most important thing: do not try to wade through rising water. The channels between the islands fill quickly and the current is stronger than it looks. People have got into serious trouble attempting to cross water that seemed shallow.
Step 1: Stop and Stay Calm
Panicking leads to bad decisions. If water is already covering the path back, do not attempt to cross it. The tide will go out again. You are not in immediate danger if you stay on high ground.
Step 2: Move to the Highest Ground
Head for the highest point of whichever island you're on. Hilbre Island itself is the largest and highest of the three islands. If you're stuck on Little Eye or Middle Eye, move to the highest rocks and stay put.
The tops of all three islands remain above water even at the highest tides, so you will not be submerged. You may get cold and uncomfortable, but you will be safe.
Step 3: Call 999 and Ask for the Coastguard
Even if you feel OK, let the Coastguard know your situation. They need to know you're out there. Give them your location (which island you're on) and how many people are in your group.
If your phone has no signal or battery, stay visible. Wave to attract attention from the shore. The Coastguard and RNLI are familiar with Hilbre rescues and will come for you.
How Long Will You Be Stuck?
That depends on the tide cycle. The water typically covers the crossing route for around six hours, roughly three hours either side of high tide. So in the worst case, you might be waiting a few hours for the water to drop enough to walk back safely.
This is why we always recommend bringing a fully charged phone, warm layers, water, and snacks. Even on a warm day, standing on an exposed island in the Dee Estuary for a couple of hours gets chilly.
What NOT to Do
Don't wade through the channels
The channels between the islands are deceptively deep and the current is strong. Even ankle deep water on a flowing tide can knock you off your feet on uneven ground.
Don't try to swim
The tidal currents in the Dee Estuary are powerful. Cold water shock is a real risk, even in summer. Stay on land.
Don't leave it too late to call
If the water is rising and you're not sure you can make it back, call the Coastguard sooner rather than later. They'd much rather have a straightforward callout than a complicated rescue.
How to Avoid Getting Cut Off
Prevention is always better than rescue. The crossing rule is simple: set off no earlier than three hours after high tide, and make sure you're back on the mainland three hours before the next high tide. That gives you a safe window in the middle of the tidal cycle when the sand is exposed.
Use HilbreTides to check today's safe crossing times before you set off. Keep an eye on the time while you're out there, and always leave a margin. The walk back takes 45 to 60 minutes, so factor that in.
The Key Takeaway
If you get cut off: stay high, stay calm, call 999. The islands don't go underwater. You will be OK. But please, check the tides before you go and give yourself plenty of time to get back.