There’s something magical about summer evenings. Longer daylight hours, backyard barbecues, patio dinners, festivals, and walks through the neighbourhood all remind us why this is many people’s favourite season. But when it’s finally time to crawl into bed, that summer magic can quickly disappear if your bedroom feels more like a sauna than a sanctuary.
Few things are more frustrating than tossing and turning because you’re too warm to fall asleep. You throw off the blankets, flip your pillow to the cool side, open the window, close the window, and repeat the process until the alarm clock seems far too close for comfort.
If this sounds familiar, you’re not alone.
Hot weather is one of the biggest culprits behind poor sleep during the summer months. While many of us assume it’s simply an inconvenience we have to tolerate until cooler weather returns, understanding how heat affects the body can help explain why restful sleep feels so elusive—and what you can do about it.
The good news? You don’t necessarily need expensive cooling systems or a fully air-conditioned home to improve your sleep. A few simple changes to your bedtime routine and sleeping environment can make a remarkable difference.
Why Heat Makes It So Difficult to Sleep
Your body is designed to cool down before sleep. In fact, one of the signals that tells your brain it’s time to rest is a gradual drop in core body temperature.
When your bedroom is excessively warm, that natural cooling process becomes much harder. Your body continues working to release heat through your skin, causing you to sweat, shift positions frequently, and wake up more often throughout the night.
Even if you don’t remember waking up, these interruptions reduce the amount of deep sleep and REM sleep you experience—two stages that are essential for physical recovery, memory, and overall health.
The result is a night that feels long and restless, followed by a morning where you wake up feeling far less refreshed than you should.
Keep Your Bedroom as Cool as Possible
While experts often recommend keeping your bedroom between 16 and 19°C, that’s not always realistic during an Edmonton heat wave. Still, every degree matters.
Start by keeping curtains or blackout blinds closed throughout the day to prevent the sun from heating the room. If temperatures outside are cooler overnight, open the windows in the evening to encourage fresh air to circulate.
A portable fan can also help. While fans don’t actually lower the room’s temperature, they increase air movement across your skin, helping sweat evaporate more efficiently and making you feel cooler.
If you have air conditioning, consider setting it to a comfortable temperature rather than making the room excessively cold. Sleeping in an icebox isn’t necessary—consistent, moderate cooling tends to work best.
Choose Bedding That Breathes
Not all bedding is created equal when it comes to staying cool.
Heavy comforters and synthetic fabrics trap heat, making it harder for your body to regulate its temperature throughout the night.
Instead, look for breathable natural fibres such as:
- Cotton
- Linen
- Bamboo
- Moisture-wicking performance fabrics
These materials allow heat and moisture to escape more easily, helping you stay comfortable even during warmer nights.
If you’re someone who still enjoys the feeling of sleeping under a blanket, consider switching to a lightweight summer duvet rather than sleeping uncovered altogether.
Take a Lukewarm Shower Before Bed
It may seem logical to jump into an icy shower before bed, but extremely cold water can actually cause your body to respond by conserving heat.
A lukewarm shower is often more effective.
As the water evaporates from your skin afterward, it helps your body cool naturally while also washing away sweat from the day.
Many people find this simple habit becomes one of the most effective parts of their summer bedtime routine.
Hydrate Throughout the Day
Hot weather increases fluid loss, and even mild dehydration can affect how you feel at bedtime.
Drinking enough water throughout the day helps your body regulate temperature more effectively and supports overall sleep quality.
That said, try not to drink large amounts immediately before bed, or you may find yourself making multiple trips to the bathroom during the night.
The goal is steady hydration rather than catching up all at once before bedtime.
Watch What You Eat in the Evening
Heavy meals require energy to digest, and digestion naturally produces heat.
On particularly warm evenings, consider choosing lighter dinners that include fruits, vegetables, lean proteins, and salads rather than rich, heavy comfort foods.
It’s also worth paying attention to alcohol.
While a cold drink on the patio may feel refreshing, alcohol can interfere with your body’s temperature regulation and significantly reduce sleep quality later in the night. Many people fall asleep quickly after drinking but experience more disrupted sleep during the second half of the night.
Limit Exercise Close to Bedtime
Regular physical activity is one of the best things you can do for your sleep—but timing matters.
Exercise temporarily raises your core body temperature, and on an already hot day, your body may struggle to cool down before bedtime.
If possible, schedule vigorous workouts earlier in the morning or later in the evening once temperatures have begun to fall. If evening exercise is your only option, give yourself plenty of time to cool down before heading to bed.
Don’t Forget Your Pillow
Sometimes it’s the smallest details that make the biggest difference.
Your head releases a surprising amount of heat during the night, so using a breathable pillowcase made from cotton, bamboo, or linen can help improve comfort.
Some people even place their pillowcase in the freezer for a few minutes before bed. While the cooling effect doesn’t last all night, it can make falling asleep much easier.
Maintain a Consistent Sleep Schedule
Summer often brings vacations, festivals, late sunsets, and social gatherings that tempt us to stay up much later than usual.
There’s nothing wrong with enjoying the season, but dramatically changing your sleep schedule every weekend can make falling asleep even more difficult during the week.
Try to maintain relatively consistent bedtimes and wake-up times whenever possible. Your body’s internal clock thrives on routine—even during summer.
Keep Electronics Out of Bed
Scrolling through your phone while you’re already feeling hot usually doesn’t help.
The blue light emitted by phones, tablets, and laptops suppresses melatonin, the hormone that signals your body it’s time for sleep. At the same time, social media, news, and emails keep your brain mentally engaged when it should be winding down.
Instead, spend the final 30 to 60 minutes before bed reading, stretching, listening to calming music, or practicing a short mindfulness exercise.
Not only will your mind begin relaxing, but you’ll avoid generating extra heat from having devices beside you in bed.
When You Can’t Sleep, Don’t Fight It
One of the worst things you can do is lie awake becoming increasingly frustrated that you aren’t sleeping.
If you’ve been awake for about 20 minutes, get out of bed and move to another cool room if possible. Read quietly, practice deep breathing, or simply sit in low lighting until you begin feeling sleepy again.
Returning to bed only when you’re actually tired helps prevent your brain from associating your bed with stress or wakefulness.
Sometimes Less Is More
Summer has a way of reminding us that comfort doesn’t always come from adding more—it often comes from simplifying.
A cooler room. Lightweight sheets. A glass of water. A quiet evening walk after dinner. A few minutes without your phone before bed.
Individually, these habits may seem small. Together, they create an environment where your body can do what it naturally wants to do: relax, cool down, and sleep.
A Good Night’s Sleep Is Worth Protecting
Quality sleep affects nearly every aspect of your health. It influences your mood, immune system, energy levels, concentration, recovery from exercise, and even your long-term risk of chronic disease.
When temperatures rise, it becomes even more important to create routines that support restful sleep rather than hoping exhaustion eventually wins.
Fortunately, you don’t need to completely overhaul your bedroom or invest in expensive gadgets. By understanding how your body responds to heat and making a handful of thoughtful adjustments, you can enjoy everything summer has to offer—and still wake up feeling rested the next morning.
After all, summer days are meant to be enjoyed. They become even better after a great night’s sleep.
