How do you naturally cool your baby during a heat wave?
The answer comes down to a few simple steps: keep the room cool, dress baby lightly, offer fluids very frequently, and use cold in a gentle and targeted way. The key is avoiding extremes: no overheating, no sudden temperature drops.
Infants and young children handle heat far worse than adults. Their bodies are still learning to regulate temperature, which can lead to discomfort, fussiness, disrupted sleep and, in more serious cases, heat stroke. Here's how to get through the hottest days more peacefully.
Why Babies Struggle in the Heat
A baby generates more body heat per kilogram than an adult but sweats far less efficiently. Their thermoregulation system is still developing, meaning they can't compensate as quickly when the temperature around them rises.
Newborns and infants under 6 months are especially at risk. They also can't clearly communicate their discomfort, which makes it that much more important for parents to stay alert during heat waves.
Warning signs to watch for: hot, flushed skin, unusual fussiness, refusal to nurse or drink, very dark urine, or excessive drowsiness. If you're unsure, contact a healthcare provider right away.
The Right Temperature for Baby's Room During a Heat Wave
The ideal is to keep baby's room between 64 and 68°F to support quality sleep. During a heat wave, hitting that target without air conditioning can be tough. Here's how to get as close as possible naturally.
In the morning, while outdoor temperatures are still cool, open windows and blinds wide to ventilate. Close them by mid-morning before the heat builds up and keep them shut for the rest of the day. In the late evening, reopen them to let in the cooler night air.
A fan can help circulate air, but never point it directly at baby. Position it to move air around the room without the airflow reaching your child. A damp cloth placed in front of the fan can slightly boost the cooling effect.
Daily Tips to Naturally Cool Baby
Dress baby lightly. One layer of lightweight cotton is enough, or just a diaper indoors. Avoid synthetic fabrics that trap heat.
Offer fluids very frequently. For a breastfed baby, increase nursing frequency: breast milk naturally becomes more hydrating in hot weather. For a formula-fed baby, you can offer small amounts of cool water between bottles starting at 6 months of age. For older kids, water is always the best option, in small, frequent sips rather than large amounts all at once.
Lukewarm baths, not cold. The instinct is to put baby in a cold bath, but that's counterproductive. A very cold bath can cause thermal shock and may even trigger the body to produce more heat. Go for a lukewarm bath around 97°F, which you can offer once or twice during the day if baby seems uncomfortable from the heat.
Gentle, targeted cooling. Run a slightly cool, damp washcloth over baby's wrists, the back of the neck, underarms, and the backs of the knees. These are areas where blood vessels sit close to the surface of the skin: cooling them helps reduce the sensation of heat quickly.
Avoid outings during peak hours. Between 11 a.m. and 4 p.m. during a heat wave, stay indoors or find a cool, shaded spot. If you do need to go out, cover the stroller with a light cloth while making sure airflow isn't blocked.
Therapeutic Cold: A Gentle Way to Soothe Baby
Hot and cold have long been used to ease the everyday discomforts of babies. While the Béké-Bobo therapeutic bear is most often used warm to relieve colic or ear discomfort, it can also be used cold, straight from the refrigerator.
Just place the bear in the refrigerator for two hours. Once chilled, it delivers a soft, even coolness that is nothing like the extreme temperatures of an ice pack or gel freezer block. That's what makes it safe for young children: the cooling is real, but never harsh.
Placed against baby's neck, back, or tummy, the chilled bear brings immediate comfort. Many parents use it in summer to help baby fall asleep or to ease irritability from the heat. The bear's shape and texture play a role too: holding something soft and cool has a calming effect well beyond simple physical cooling.
The Béké-Bobo therapeutic bear is classified as a medical device by Health Canada and the European Union. Made in Quebec for more than 26 years, it has been part of the daily lives of more than 1.4 million parents around the world. It is designed to be used safely in both warm and cold modes, for newborns and young children alike.
Shop Béké-Bobo Therapeutic Teddy Bears
What to Avoid in the Heat
A few common instincts can actually make baby more uncomfortable.
Don't over-bundle baby. Even at night, if the indoor temperature is above 75°F, a light sleep sack is more than enough, and even that depends on how your child is feeling.
Don't overexpose baby to the sun. A baby under 12 months should not be in direct sunlight, even for a few minutes. Infant skin is very thin and burns extremely fast.
Never leave baby alone in a vehicle in warm weather, even for a moment, even with a window slightly open. The temperature inside a closed car can exceed 104°F in under ten minutes.
When to Seek Emergency Care
Call 911 or your doctor immediately if baby shows any of the following signs during a heat wave: body temperature above 101.3°F, no urine output for several hours, a sunken fontanelle (a sign of dehydration), difficulty breathing, or loss of consciousness.
Heat stroke is a medical emergency. Do not try to manage it on your own.
FAQ: Babies and Heat Waves
At what temperature does heat become dangerous for a baby?
Above 90°F in baby's room, the risk of hyperthermia increases. It's recommended to keep the main living area below 77°F and the bedroom below 68°F so baby can sleep comfortably. During a prolonged heat wave, spending a few hours somewhere air-conditioned, like a library or shopping mall, can make a real difference.
Can I use a chilled therapeutic bear on a newborn?
Yes, without any concern. Whether chilled in the refrigerator or freezer, the bear delivers a gentle coolness that is never icy. If you have specific questions about using it with a newborn, your pediatrician or midwife can always provide guidance.
Does a breastfed baby need water during a heat wave?
Generally, breast milk provides enough hydration for babies under 6 months, even in hot weather. Increase nursing frequency rather than introducing water. For children over 6 months who have started solids, you can offer small amounts of cool water between feedings. If you're concerned, speak with your doctor.
