Collaborative post
Cornwall’s got some of the best beaches in the country, but there’s a catch that trips up a lot of families. Loads of them practically vanish at high tide. Places like Kynance Cove on the Lizard, and plenty of spots around Padstow and St Ives, can go from wide open sand to a thin strip backed up against the cliffs in just a few hours. Turn up without checking the tides first and you might find there’s literally nowhere to put your towel down.
The good news is that a few minutes with a tide table the night before will save you the headache. Here’s how to plan your beach days so the sea’s actually on your side.
How to Read a Tide Table
A tide table tells you when high and low water will hit, and how high or low the water will be, for each day. You can find free ones online for most Cornish towns, or pick up a printed copy from any harbour shop. Every day will have two highs and two lows, spaced roughly six hours apart.
The number you want to pay attention to is the tidal range, which is the difference between the high water mark and the low water mark. On Cornwall’s north coast, that range can easily top six metres during spring tides (those are the big ones that happen around a full or new moon). That’s a massive amount of sand coming and going twice a day.
For a family beach day, low tide is your golden window. That’s when you’ll get the most space, the best rockpools, and the calmest water for paddling. You don’t have to time it perfectly, though. If you get there about two hours before low water, you’ll have a solid four-hour stretch of usable beach before it starts flooding back in.
Plan Your Day Backwards from Low Tide
Don’t just pick a beach and hope for the best. Start with the tide table and work your day around it.
Say low tide is at 1pm. Get there by 11am and you’ve got roughly 11am to 3pm with loads of sand to spread out on. If low tide falls early in the morning, do the beach first thing and save the cream tea for later. If it’s late in the day, flip it round, do your exploring in the morning, and hit the sand after lunch.
This is especially handy for rockpooling. The best pools open up on a falling tide, around one to two hours before low water. That’s when crabs, anemones, and little fish get trapped in the shallow pools. Once the tide turns, those pools fill up quickly and everything disappears.
Watch Out for Tidal Cut-Off
This is the important safety bit, and it catches people out every single year. Some north coast beaches have headlands and rocky sections that get completely cut off once the tide comes in. Visitors will walk around a headland at low tide without realising the path back will be underwater a couple of hours later.
Beaches around Perranporth and stretches near Padstow are particularly known for this. Bedruthan Steps, another notorious spot for tidal cut-off, has had its beach access closed since 2020 following a major cliff fall, and both the National Trust and RNLI advise against attempting alternative routes down.
Before you wander beyond the main beach area, check the tide times. If there’s a lifeguard on duty, have a quick word with them. And if you’ve walked past rocks or around a headland, make sure you head back well before the tide turns. Give yourself at least an hour’s buffer, because the water comes in faster than most people expect.
Pick a Base That Works With Any Tide
One of the best things you can do is stay somewhere within a short drive of a few beaches that face different directions. A north-facing beach might be blown out and high-tided at the exact same time a sheltered south-facing cove nearby is calm and sandy. If your cottage is near a town like St Ives, Padstow, or Falmouth, you’ll have decent options within 15 to 20 minutes by car.
If you’re looking to book Cornwall cottages on Beach Stays, or anywhere else for that matter, pick your town before you fall in love with a property. A cottage above one perfect cove is a gamble, because that cove might be underwater or blown out for half of every day. A base with three or four beaches in easy reach is what actually makes tide planning work, so check the map around each property against the tide table before you commit.
Five Minutes of Planning, a Full Day on the Sand
Getting the tides right means longer beach days and much better rockpooling for the whole family. All you need to do is spend five minutes with a tide table the night before, pick your beach, and plan backwards from low water. It really is that simple.