Every summer the same advice goes round: drink plenty, keep the curtains closed, dress for the weather, check on elderly neighbours. It is good advice. It also assumes something that is not always true: that the person it is aimed at can notice they are thirsty, notice they are too hot, and act on either.

For someone living with dementia, that assumption can quietly fall apart. We see it on visits across Gravesend, Dartford, Medway and the rest of Kent every summer: a jumper worn over a thin blouse on the hottest day of the year, a glass of squash left untouched by the chair, a confident "I've had plenty to drink" that is not quite true. None of this is stubbornness. It is part of the condition.

This article closes our short series on heat, dehydration and older relatives. Here we look specifically at what changes when dementia is part of the picture, why the standard heat advice needs a rethink, and what our team watches for on a hot day, so families do not have to watch alone.

When the Usual Heat Advice Assumes Too Much

NHS advice on coping in hot weather is sound: stay hydrated, keep rooms cool, dress for the weather, and check on those most at risk (NHS, "Heatwave: how to cope in hot weather"). We set out what that looks like in practice in Heat, Dehydration and an Older Relative: What to Watch For, the article this whole series builds from.

That advice has a built-in assumption: that the person can self-monitor. Notice the thirst. Notice the heat. Reach for water, or ask for the fan to be moved, or take off a cardigan. Dementia can affect exactly that ability to notice and act, at exactly the time of year when it matters most.

What We Actually See on Visits

A cardigan on a properly hot day is not confusion about the weather forecast. Someone with dementia may genuinely not feel the heat the way they once did, or may be responding to a memory of feeling cold rather than the room they are actually sitting in. The reverse happens too: someone can feel far too warm and not connect that feeling to opening a window or taking off a layer.

Thirst works the same way. The urge that would normally send any of us to the kettle or the tap simply may not register, or may not be recognised for what it is. That is not something a person can be reminded into fixing. It needs a different approach.

Why "Have You Had a Drink?" Isn't a Fair Question

It is the obvious question, and it is often the wrong one. Someone with dementia may answer "yes" because that is the socially easy answer, because they genuinely believe it, or because the question itself is hard to process quickly in the moment. None of that is dishonesty. It is the illness giving the answer, not the person.

Asking repeatedly does not usually help either. It can feel like nagging, or like a test being failed again and again, which nobody enjoys. We stopped relying on the question a long time ago. We rely on habits instead.

Building Fluids Into the Day, Not Asking For Them

The better approach is to make a drink part of something that already happens, rather than a separate request. A cup of tea alongside a favourite programme. A small glass of squash next to the newspaper at breakfast. A jug kept within easy reach and easy lifting, refilled before it is ever noticed as empty.

We go into the practical detail, including the drinks and foods that work when someone will not simply drink water, in When Mum Will Not Drink: Getting Fluids Into Someone Who Says No. The short version is that little and often, offered at the same points in an established routine, beats a big glass placed down with a hopeful "there you go."

The GP or the Pharmacist, Never Us

One thing we are asked about often, and one thing we will always be honest about: some medicines can change how the body copes with heat and with fluid, including some common medicines for blood pressure and for waterworks. We cannot tell a family which of their relative's medicines might be affected, and we would never suggest changing or stopping anything because the weather has turned warm.

That conversation belongs with the GP or the pharmacist, ideally before the hot weather arrives rather than in the middle of it. Please never stop or adjust a prescribed medicine because of a heatwave without medical advice. If in doubt, ring the surgery or ask at the counter. It is a short conversation that is always worth having.

The Signs That Dementia Can Hide

This is the part that worries families most, and rightly so. Confusion is already part of daily life for someone with dementia, which makes new confusion, caused by heat or dehydration, much easier to miss. A person who is already a little muddled on an ordinary day can tip into something more serious on a hot one, and the change can look deceptively like just one of their bad days.

We have set out the full list of warning signs in Heat Exhaustion or Heatstroke: Which Is It, and When Do You Call 999? and in Sudden Confusion in Hot Weather: Dehydration, UTIs and Why It Is Urgent. NHS guidance is clear that new confusion, or a marked change from someone's usual level of confusion, should never simply be put down to a bad dementia day: it needs medical attention. If someone seems significantly more confused than their normal self, feels hot but is not sweating, or is not improving with rest and cooling, treat it as urgent and call 999. If it does not feel like an emergency but you are worried, NHS guidance is to call 111, or use 111 online at 111.nhs.uk.

Watching, Not Asking: How Our Carers Approach a Hot Day

Every one of our carers completes dementia training as part of induction, with practical role play rather than a slideshow, so they understand what a hot, overwhelming day can feel like from the other side. On a genuinely hot day, that training changes what a visit looks like: a drink offered without being asked for, curtains checked without a fuss being made about it, a cardigan noticed and gently questioned rather than argued over.

This fits how we think about care generally. Promoting independence means doing less for someone, not more, right up until the point where doing less is not safe. On a hot day, that balance shifts a little, quietly, without taking anything away from someone's day.

For You, With You This Summer

That is the whole heat series, from the pillar guide on dehydration and older relatives through heat exhaustion and heatstroke, keeping a home cool when mobility is limited, getting fluids into someone who says no, and sudden confusion in hot weather. Dementia sits across all of it, which is why it gets the last word.

If you are supporting someone living with dementia through the warmer months in Kent, and would like to talk through a little extra support on the hottest days, whether that is a short domiciliary care visit, live-in care, or supported living, our team is here for it. Get in touch through our Kent contact page and we will have an honest, unhurried conversation about what would actually help.