The Clocks Go Back: How the Time Change Can Affect Your Sleep
On Sunday 25 October 2026, the clocks go back by one hour across the UK. At 2am, the clock returns to 1am, marking the end of British Summer Time and the return to Greenwich Mean Time.
An extra hour in bed sounds like good news. But an extra hour on the clock does not necessarily mean an extra hour of sleep.
Our sleep patterns are influenced by more than the time displayed on our phones. Light exposure, daily routines and our internal body clock all play a part in determining when we feel awake and when we naturally become sleepy.
So, as the nights grow longer, the autumn clock change can be a useful opportunity to look at something bigger:
Are you simply spending enough time in bed, or is your sleep environment actually helping you rest comfortably?
What Actually Happens When the Clocks Go Back?
In the UK, the clocks go back by one hour on the last Sunday in October.
In 2026, that happens on 25 October, when 2am becomes 1am.
Technically, this gives us an additional hour overnight.
But research suggests that people do not necessarily use all of it for sleep.
A UK Biobank study looked at sleep data around the spring and autumn clock changes. During the autumn transition, average sleep duration on the Sunday of the change was around 33 minutes longer than the previous Sunday and 38 minutes longer than the following Sunday.
So while people did sleep longer on average, the increase was considerably less than the full extra hour available.
That is because sleep follows biological and behavioural patterns, not simply the clock on the wall.
Your Body Has a Clock of Its Own
Your body follows an approximately 24-hour cycle known as your circadian rhythm.
This internal timing system helps regulate when you naturally feel awake and when you become sleepy.
One of the important signals involved is light.
Regular sleep and wake times, together with exposure to natural daylight during the day, can help support a consistent sleep-wake routine. NHS guidance recommends maintaining regular sleep hours and getting exposure to natural light during the daytime.
When the clocks move by an hour, the time on your watch changes instantly.
Your habits may not.
You might therefore notice yourself:
- feeling sleepy slightly earlier;
- waking earlier than expected;
- or simply feeling a little out of rhythm.
Not everybody notices the transition in the same way, and the autumn change is generally considered less disruptive than losing an hour in spring.
Is the Autumn Clock Change Bad for Your Sleep?
Not necessarily.
It is important not to exaggerate the effects of the October transition.
When the clocks move forward in spring, we effectively lose an hour overnight. The autumn change is different: we gain an hour of clock time.
That means there is no reason to assume that the clocks going back will automatically ruin your sleep.
Instead, think of it as a useful seasonal reminder.
The evenings are becoming darker, the nights are getting longer and your daily routine may gradually change with them.
It is a good opportunity to ask whether your sleep habits and sleeping environment are supporting you properly.
How to Make the Clock Change Easier on Your Sleep
1. Keep Your Sleep Schedule Consistent
Try to maintain roughly consistent bedtimes and wake times, rather than dramatically changing your routine because you technically have an extra hour available.
Regular sleep and wake times can help reinforce your body's sleep-wake cycle. NHS guidance recommends keeping a regular routine where possible.
You do not need to obsess over exact timings.
The goal is simply to give your body a reasonably predictable routine.
2. Make the Most of Natural Daylight
Autumn means shorter days and darker evenings.
Natural light during the daytime remains an important cue for your daily sleep-wake rhythm.
Simple habits can help:
open your curtains after waking, take a morning walk or spend some time outdoors during daylight hours.
NHS guidance recommends getting exposure to natural daylight during the day, with some sources specifically suggesting morning light.
3. Give Yourself Time to Wind Down
Going directly from work, television or your phone to trying to sleep can make bedtime feel abrupt.
A predictable wind-down routine can help create a clearer transition between daytime and sleep.
That might mean:
reading, stretching, dimming the lights or simply giving yourself some quiet time before bed.
The NHS recommends a calm bedtime routine and reducing phone, tablet and computer use before sleep.
4. Check Your Bedroom Environment
The longer autumn nights are also a good opportunity to look at your actual sleep environment.
Your bedroom should ideally feel dark, quiet and comfortably cool. NHS sleep guidance notes that temperature, light and noise can influence how easy it is to sleep comfortably.
Your bed setup matters too.
Because spending eight hours in bed is not necessarily the same thing as spending eight comfortable hours asleep.
An Extra Hour Does Not Solve What Is Already Disturbing Your Sleep
The clock change can give you more time in bed.
But it cannot automatically remove something that is already disturbing your nights.
If nighttime reflux, GORD or shoulder discomfort regularly affects your sleep, your sleeping position and physical setup may also be worth considering.
Nighttime Reflux and Sleeping Position
For people experiencing nighttime reflux or GORD, elevation and sleeping position can play an important role in the nighttime setup.
The MedCline Reflux Relief System is designed to create 15–20° of upper-body elevation while supporting side sleeping. It combines the Reflux Relief Wedge, patented arm pocket, Therapeutic Body Pillow and Insert Pillow.
The important distinction is that the system is designed to elevate the entire torso, rather than simply raising the head with additional pillows.
Shoulder Discomfort and Side Sleeping
For side sleepers, pressure on the downside shoulder can also make finding a comfortable position more difficult.
The MedCline Shoulder Relief System uses a patented arm pocket designed to create space for the downside arm and reduce pressure on the shoulder while side sleeping. The system creates a lower incline than the Reflux Relief System.
Make the Extra Hour Count
When the clocks go back this October, there is nothing wrong with enjoying the idea of an extra hour in bed.
Just remember:
better sleep is about more than having more time available to sleep.
Your routine, daylight exposure, bedroom environment, comfort and sleeping position can all influence how your nights feel.
So rather than asking only:
“Did I get enough hours?”
it may also be worth asking:
“What is actually happening during those hours?”
The clocks go back on 25 October.
Longer nights are coming. Make them count.
Frequently Asked Questions
When do the clocks go back in the UK in 2026?
The clocks go back on Sunday 25 October 2026.
At 2am, the clocks return to 1am and the UK moves from British Summer Time to Greenwich Mean Time.
Do you really get an extra hour of sleep?
There is an additional hour available overnight, but it does not necessarily translate into a full extra hour of sleep.
In one large UK study, participants slept around 33–38 minutes longer on the Sunday of the autumn clock change compared with the surrounding Sundays.
Can the clocks going back disrupt sleep?
Some people may notice temporary changes to their sleep or waking pattern.
The autumn transition is generally less disruptive than the spring change because the clock moves backwards rather than forwards.
How can I support my sleep after the clock change?
Maintaining relatively regular sleep and wake times, getting natural daylight during the daytime, creating a calm bedtime routine and keeping your bedroom dark, quiet and comfortable are sensible starting points.