Feeling hot, hot, hot! Summer heat safety for seniors.

We absolutely love our Florida winters, but our summers, perhaps not so much. In South Florida, summer heat is more than uncomfortable — it can become a real health and safety issue, especially for older adults. Florida experiences extreme heat every year, typically from June through September, and the mix of high temperatures and humidity makes it harder for the body to cool itself. For older adults, even temperatures that may seem manageable can lead to heat-related illness much faster than many families realize.

As therapists, we talk (a lot!) with patients and families about movement, strength, balance, and staying active. But in the hottest months of the year, I wanted to talk about something just as important: how to stay safe while staying active. Exercise is still important in the summer — but timing, hydration, supervision, and common-sense cooling strategies matter just as much.

Why summer heat hits seniors harder

Older adults are more vulnerable to heat-related illness for several reasons. As we age, our bodies do not adjust as efficiently to sudden temperature changes. Many seniors also live with chronic conditions such as heart, lung, kidney, or metabolic disease, and many take medications that can affect sweating, hydration, or the body’s ability to regulate temperature. In other words, the body’s “cooling system” often has to work harder — and may not respond as quickly — during extreme heat.

For patients living with dementia or other cognitive changes, the risk can be even greater. Some individuals may not recognize that they are getting too hot, may forget to drink fluids, or may not be able to clearly say, “I’m thirsty,” “I’m dizzy,” or “I don’t feel right.” Dementia can also make it harder for a person to take self-protective actions during heat, and wandering can become especially dangerous in hot weather.

 And don't forget about medications and heat

Another important piece of summer safety is medication awareness. Many older adults take prescription or over-the-counter medications that can make it harder for the body to cool itself, stay hydrated, or respond normally to heat. The risk can be even greater when a person is taking multiple medications at the same time, which is common in older adults.

Some of the most common medication groups that can increase heat risk include diuretics (“water pills”), which can lead to fluid loss and electrolyte imbalance; beta blockers, which can make it harder for the body to move heat away from the skin and may increase the risk of dizziness or fainting; and ACE inhibitors or ARBs, which can reduce thirst sensation and contribute to low blood pressure during hot weather.

Other medications can affect the body’s natural cooling system more directly. Anticholinergic medications — found in some allergy medicines, sleep aids, bladder medications, and nausea medications — can reduce sweating and interfere with thermoregulation. Some antipsychotics, antidepressants, and seizure medications can also affect how the brain and body regulate temperature, which may make overheating more likely.

For some seniors, the issue is not just overheating — it is also how medications can change the way heat symptoms look. Medicines that cause drowsiness, sedation, or confusion, such as some pain medicines, anxiety medicines, and psychiatric medications, can make it harder for a person to recognize thirst, ask for help, or respond appropriately when they are getting too hot. In someone with dementia, that can make heat-related illness even harder to spot.

From a therapy standpoint, this matters because medication-related heat side effects can show up as weakness, dizziness, fatigue, poor balance, slowed walking, unsteadiness, confusion, or a sudden decline in participation. A patient may seem “off,” less steady during transfers, more tired during exercise, or unusually sleepy after being outdoors. These changes should never be brushed off as “just the heat,” especially if the person is on medications that can increase summer risk.

What overheating can look like

Heat-related illness does not always begin dramatically. Early warning signs can include headache, dizziness, weakness, nausea, muscle cramps, heavy sweating, thirst, or feeling unsteady. In heat exhaustion, a person may look pale, feel clammy, or seem unusually tired or uncoordinated. These are important signs to take seriously because heat exhaustion can progress to heat stroke if the person is not cooled and treated promptly.

Heat stroke is a medical emergency. Warning signs may include confusion, fainting, acting strangely, a body temperature above 104°F, hot flushed skin, no sweating even when it’s hot, or a strong rapid pulse that later becomes weak. If you see these signs, call 911 and move the person to a cooler place right away while beginning cooling measures.

When someone can't tell you they are hot

This is where caregivers and family members become especially important. If a person has dementia, aphasia, or another condition that limits communication, you may need to watch for behavior changes instead of verbal complaints. A person who is overheating or dehydrated may suddenly seem more confused, agitated, restless, withdrawn, or fatigued than usual. They may pace, resist care, want to leave the house, or appear more anxious than normal. In someone with Alzheimer’s disease, even a relatively common issue like dehydration can cause noticeable changes in behavior and confusion.

Other observable clues can include a dry mouth, dizziness, rapid heart rate, dark or reduced urine, weakness, sluggishness, or refusing food and drink. For many families, the biggest clue is simply this: “Something feels off today.” If a person who is usually calm becomes irritable, or someone who usually participates becomes unusually sleepy or disengaged, it is worth considering heat, dehydration, or another medical issue.

Practical Strategies

One of the best summer safety strategies is to adjust the routine before symptoms start. Outdoor walks, home exercise programs, and community outings should be scheduled for the coolest parts of the day, such as early morning or late evening. Strenuous activity during the hottest hours should be limited, and indoor activity is often the better choice when the heat index is high.

Caregivers should encourage fluids before, during, and after activity, and not wait for a senior to say they are thirsty. Water is usually the first choice, and many people also do well with broth, juice, milk, or other decaffeinated drinks if plain water is not appealing. If a patient has fluid restrictions, takes diuretics, or has heart or kidney disease, families should ask the physician what a safe hydration goal looks like during hot weather.

Keeping the environment cool is just as important. Air conditioning is the safest option during extreme heat. The CDC specifically notes that fans should not be relied on as the primary cooling method when it is very hot, and that they can actually increase body temperature when indoor temperatures are above 90°F. Cool showers, cool baths, lightweight clothing, closed blinds during the day, and visits to air-conditioned spaces like libraries, malls, senior centers, or cooling shelters can all help.

For patients with dementia, structure matters. Try to maintain a calm, predictable routine and build in scheduled drink breaks, rest periods, and cooling breaks throughout the day. Make sure basic needs are met — hydration, toileting, nutrition, and comfort — because unmet needs can increase the risk of agitation and wandering. If a person tends to become restless later in the day, plan quiet indoor activities during that time and avoid leaving them unsupervised in unfamiliar or overstimulating settings.

A good summer routine also includes a medication check-in with the physician or pharmacist. Families should ask whether any medications increase the risk of dehydration, overheating, sun sensitivity, dizziness, or falls; whether there should be a specific “hot day plan”; and how much fluid is safe if the patient is on fluid restrictions or takes diuretics.

In closing

Movement is still medicine. We want our patients to keep walking, stretching, strengthening, and practicing the exercises that help them stay mobile and independent. We just want them to do it safely, especially during a South Florida summer. So yes — don’t forget to do your exercises — but during the hottest months, remember this too: do them smart, do them cool, and do them safely.

Talk to your therapist about any specific concerns or reach out if you would like more information. We are here to help.