With a heatwave settling over the north-west this week, the Wirral's beaches are going to be busy. West Kirby, New Brighton, Hoylake and the rest of the coast are some of the best places in the region to cool off and make the most of the sunshine, but hot weather is also when the coast catches the most people out. Every summer spell like this brings a spike in RNLI and Coastguard call-outs along this stretch of coast, and the causes are nearly always the same handful of things. Here's how to stay safe.
The short version: the sea here is still cold even when the air is hot, the tide comes in fast across flat sand, and most serious incidents happen when people go into the water to cool down or to help someone who's struggling. Check the day's tide times and the weather before you go, and keep an eye on children and dogs near the water.
Cold water shock: the hidden danger in hot weather
This is the big one, and it's the least obvious. On a baking hot day the Irish Sea off the Wirral is still cold, often only around 13–15°C even in midsummer. Jumping or wading into cold water when you're hot is exactly when cold water shock strikes: the sudden cold makes you gasp involuntarily, your breathing races, and for a minute or two you can't control your body or swim properly. It's a leading cause of drowning, and it affects strong swimmers just as much as anyone else.
The RNLI's advice if you find yourself in trouble in the water is simple and it works: Float to Live. Lean back, spread your arms and legs, keep your head above water, and let the first cold-water gasp pass before you try to swim or call for help. If you're going in to cool off, go in slowly to let your body adjust, don't jump or dive in, and never swim alone.
If you see someone in trouble — don't go in
It's the hardest advice to follow and the most important. Every year people drown trying to rescue someone else, often a child or a dog. If you see someone struggling in the water, stay on land, call 999 and ask for the Coastguard, and look for something that floats to throw to them. You are far more use to them on the beach with a phone than in the water beside them.
Swim where it's safest
If you want to get in the sea, choose a beach with RNLI lifeguards and swim between the red and yellow flags, which mark the patrolled, supervised area. On the Wirral, New Brighton (Perch Rock) and Leasowe Bay have seasonal RNLI lifeguard cover in summer — check the RNLI website for the current daily patrols before you rely on it. Avoid swimming near groynes, piers and the mouth of the Mersey, where currents are stronger, and be aware that rip currents can pull you away from the shore. If you're caught in one, don't swim against it: stay calm, float, and signal for help.
A word on the Marine Lakes at West Kirby and New Brighton: they're popular in hot weather, but they're for sailing, windsurfing and paddleboarding rather than casual swimming, and the water quality and depth vary with the tide. Stick to organised watersports there rather than treating them as a swimming pool.
Don't let the heat distract you from the tide
Hot, calm, sunny days are deceptively dangerous on this coast, because the flat sand looks so inviting that people wander a long way out, lose track of time, and get cut off by the returning tide. The Wirral has one of the largest tidal ranges in Britain, and the flood comes in across the sand faster than you can walk. This applies everywhere, but especially to anyone walking out towards Hilbre Island from West Kirby, or out across the sands at Hoylake.
The rule doesn't change in a heatwave: check the safe crossing times before you set off for Hilbre, give yourself a clear margin to get back, and never try to beat an incoming tide. You can see tide times for beaches right around the coast on the all Wirral tides page, and our guide on what to do if you get cut off is worth a read.
Watch out for inflatables
Inflatable dinghies, unicorns and lilos are a classic hot-weather rescue on the Wirral. A light offshore breeze — wind blowing from the land out to sea — can carry an inflatable, and whoever's on it, a long way from shore in minutes, often without them realising until it's too late. The safest advice is to leave inflatables for the pool and the garden. If you do use one at the beach, keep children within arm's reach, never use them when the wind is blowing offshore, and don't try to swim after one that's drifting — let it go and call for help.
Sun safety on the beach
The basics matter more on an exposed, breezy beach, where the sea air can hide how much sun you're getting. Use a high-factor sunscreen and reapply it, especially after being in the water; cover up with a hat, sunglasses and a loose top in the strongest sun; seek shade in the hottest part of the day, roughly 11am to 3pm; and drink plenty of water. Keep a particular eye on babies, young children and older relatives, who feel the heat fastest. Heat exhaustion — feeling dizzy, sick, with a headache and heavy sweating — is a signal to get into the shade, cool down and rehydrate straight away.
Keep dogs safe in the heat
Dogs struggle badly in hot weather. Never leave a dog in a parked car, even for a few minutes and even with a window cracked; it can become deadly very quickly. On the beach, remember that dry sand and promenades get hot enough to burn paw pads, so walk dogs in the cooler early morning or evening, carry water, and find shade. And the same tide rules apply: don't let a dog lure you onto cut-off ground, and if your dog gets into difficulty in the water, don't go in after it — call the Coastguard. There's more in our guides to dog-friendly Wirral beaches and crossing with kids and dogs. Note too that many Wirral amenity beaches have summer dog restrictions, so check the local signs.
Enjoy it — sensibly
None of this is meant to put you off. A Wirral beach in a heatwave is a genuinely lovely place to be, and the vast majority of visits pass without any trouble at all. The point is just that the same heat that makes the coast so appealing is what stretches the rescue services thinnest, almost always through a few avoidable mistakes. Check the tide and the weather before you go, respect how cold and how fast the sea really is, keep your group together, and you'll have a brilliant day.
Heading out? Start with today's crossing and tide times, and pick your beach from our guide to the Wirral's coast.
Written by the HilbreTides team. For live heat-health and weather warnings, check the Met Office. This article is general safety guidance, not a substitute for on-the-day conditions.