Sleeping Badly in Summer: What Helps and What Does Not

Falling asleep depends on your core temperature dropping. It falls in the evening, continues through the night, and reaches its lowest point a couple of hours before you wake. That drop is one of the signals that initiates sleep.

Anything that prevents it makes falling asleep harder, which is why hot nights are genuinely difficult rather than just uncomfortable.

Why heat interferes

Your body loses heat mainly through the skin, particularly the hands and feet, where blood vessels dilate in the evening to dump heat. That is why warm hands and feet at bedtime are a sign of the process working, and why cold feet can make it harder to fall asleep.

If the surrounding air is warm, that heat loss is less effective, and core temperature falls more slowly. Humidity makes it worse still, because sweat that does not evaporate does not cool you.

The effect is measurable. Sleep in hot conditions is typically lighter, with more awakenings and less deep sleep, even in people who fall asleep without difficulty.

What actually helps

Cool the room, not just yourself. Air conditioning set somewhere around eighteen to twenty degrees for sleeping suits most people. Cooler than you would choose for sitting in.

A warm shower an hour or two before bed. Counterintuitive and well supported. A warm shower brings blood to the skin, and the subsequent heat loss accelerates the drop in core temperature. It works better than a cold shower, which causes the body to conserve heat.

Cool the extremities. Feet out of the covers. This is a small, effective and free intervention, and it is why people do it instinctively.

Lighter bedding. Breathable rather than merely thin.

Avoid heavy meals and alcohol late. Both raise body temperature. Alcohol also fragments the second half of the night, which is well established and widely ignored.

Keep the room dark. Early light in summer wakes people who would otherwise sleep on.

Where practice fits

A slow evening session helps, if it is slow. Vigorous exercise close to bedtime raises core temperature and alertness at exactly the wrong moment. Gentle floor work with long exhalations does the opposite.

The most useful version: fifteen minutes, an hour or so before bed, lying and seated work, nothing that raises a sweat, exhalations roughly twice as long as inhalations. In air conditioning.

Breathing practice genuinely helps with the mind side. If what keeps you awake is a busy head rather than heat, extended exhalations and attention on the breath are a reasonable intervention and better supported than most things offered for this.

What it will not do is overcome a hot room. If the environment is wrong, no breathing practice fixes it, and the physical measures above matter far more.

The morning side

Getting bright light early in the day strengthens the rhythm that governs the evening temperature drop. In summer that is easy to achieve before it gets unpleasant outside, and it is worth doing.

Keeping wake time consistent matters more than bedtime, which surprises people.

When it is not the heat

If sleep is poor year-round, if you wake unrefreshed despite adequate hours, if you snore heavily or your partner reports pauses in your breathing, or if you are persistently exhausted during the day, those are worth raising with a doctor. Sleep apnoea in particular is common, under-diagnosed, and treatable, and no amount of evening practice addresses it.

Where a teacher helps

Building a wind-down sequence short enough that you will do it at eleven at night, and slow enough that it helps rather than wakes you up. Most people asked to design their own evening practice make it too active.

Sessions are live on video, thirty or sixty minutes, at times that suit an evening.

Questions people ask

Why is it harder to sleep when it is hot?

Falling asleep depends on core temperature dropping, and warm air makes that heat loss less effective. Humidity compounds it. Sleep in hot conditions tends to be lighter with more awakenings even when falling asleep is not difficult.

Does a cold shower before bed help?

A warm shower works better. It brings blood to the skin and the subsequent heat loss speeds the fall in core temperature. A cold shower causes the body to conserve heat, which is the opposite of what you want.

What room temperature is best for sleep?

Somewhere around eighteen to twenty degrees suits most people, which is cooler than a comfortable sitting temperature. Cooling the room matters more than cooling yourself.

Will an evening practice help me sleep?

A slow one, an hour or so before bed, with long exhalations, generally does. A vigorous one close to bedtime raises core temperature and alertness and can make things worse. Neither will overcome a room that is too warm.