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Table of Contents
- Why Does Spring Affect Your Sleep?
- The Five Principles of Good Sleep Health
- Practical Steps to Reset Your Sleep for Spring
- Spring Sleep FAQs
Longer daylight hours in spring delay your body’s release of melatonin, the hormone that signals sleep. This means you may not feel tired at your usual bedtime, even though your need for 7–9 hours of sleep hasn’t changed. The result is a gradual shift in your sleep window that can leave you waking tired and feeling out of sync.
The good news is that a few straightforward adjustments, to your morning routine, your bedroom environment, and your bedding, can help your body clock catch up with the season. We’ve worked with our partner, The Sleep Charity, to put together this guide to resetting your sleep for spring and the lighter months ahead.
Why Does Spring Affect Your Sleep?
Light is the strongest signal controlling your circadian rhythm, your body’s internal 24-hour clock. As daylight extends into the evening during spring and summer, your brain delays the release of melatonin. That delay has a knock-on effect on the whole sleep cycle:
• You don’t feel tired at your usual bedtime
• You may stay up later without realising
• Your sleep window gradually shifts
• You wake feeling groggy, even after what seemed like a full night
Although brighter days can make you feel as though you need less sleep, your biological requirement doesn’t change. Most adults still need 7–9 hours of good quality rest for physical recovery, mental clarity, and long-term wellbeing.
The key isn’t forcing sleep earlier. It’s helping your body clock adjust naturally.
The Five Principles of Good Sleep Health
Sleep expert Professor Colin Espie recently published his Five Principles of Good Sleep Health, supported by The Sleep Charity. Spring is an ideal time to put them into practice.
1. Value Sleep
Treat sleep as a non-negotiable part of your health, not something to trade for extra screen time or later evenings. Longer days make it tempting to push bedtime later, but protecting your wind-down time matters as much in June as it does in January.
2. Prioritise Regularity
Go to bed and wake up at roughly the same time each day, including weekends. A consistent wake-up time is one of the most effective signals you can give your body clock when it needs resetting.
3. Optimise Your Sleep Environment
The conditions that worked through winter may not work now. Cool, dark, and quiet remains the standard for good sleep, and in spring, that means adjusting for warmer nights, lighter mornings, and changing air flow.
4. Wind Down Before Bed
Create a predictable pre-sleep routine. Dimming your lighting in the evening helps signal to your brain that it’s time for melatonin production to begin, something that matters even more when natural daylight is still streaming in at 9pm.
5. Manage Lifestyle Factors
Morning light exposure, physical movement, caffeine timing, and evening screen use all influence when your body feels ready for sleep. Small shifts in these habits can have a meaningful effect on how quickly you adjust to the longer days.
Practical Steps to Reset Your Sleep for Spring
Anchor Your Body Clock with Morning Light
If evening light delays melatonin, morning light can help reset it. Natural daylight first thing in the morning is one of the strongest cues your body clock responds to.
• Get outside within an hour of waking, even briefly
• Aim for 10–30 minutes in natural daylight
• Open curtains immediately if you can’t get outdoors
Adjust Your Bedroom for Warmer Nights
The ideal bedroom temperature for sleep is between 16–18°C. Overheating is one of the most common causes of night waking in spring, especially if you’re still using a heavier winter duvet.
• Switch to a lighter tog duvet - a 4.5 tog or a layered combination works well for the transitional months
• Layer your bedding rather than relying on one heavy quilt, so you can adjust through the night
• Choose breathable fabrics - cotton percale and bamboo-blend sheets both allow heat and moisture to move away from the body
• Improve airflow where possible - even a slightly open window can help regulate temperature
Manage Lighter Mornings
Earlier sunrises can wake you before you’re ready, cutting into the last sleep cycle of the night. This is especially common if your bedroom faces east.
• Blackout curtains or blinds make the most noticeable difference
• Layered window coverings can help if full blackout isn’t practical
• A comfortable eye mask is a simple, effective fallback
The Spring Bedroom Refresh
Spring cleaning applies to your sleep environment too. After months of heavier winter bedding, a seasonal refresh can improve both comfort and hygiene, and help signal a new sleep season to your body.
• Wash and rotate duvets
• Switch to a lower tog rating for spring and summer
• Wash pillows and protectors
• Air mattresses and pillows outdoors if possible
• Replace worn bedding that no longer feels comfortable or supportive
Fresh, breathable fabrics make a real difference to temperature regulation and comfort, two of the most important factors in unbroken sleep. From lighter tog duvets to crisp cotton sheets woven for breathability, Belledorm’s range fits naturally into a seasonal sleep reset. Think of it less as replacing a product and more as adjusting your sleep environment for the months ahead.
Spring Sleep FAQs
Why am I tired in spring even though the days are longer?
Longer evenings delay your body’s release of melatonin, which means you tend to fall asleep later while still waking at the same time. This gradually shortens your total sleep and creates a sleep debt, even if you don’t immediately notice it. Your body still needs 7–9 hours regardless of how bright it is outside.
How do I reset my sleep routine after the clocks change?
Start with a consistent wake-up time and get morning light exposure within the first hour. Adjust your bedroom environment for temperature and brightness, and bring your bedtime earlier in 15-minute increments over several days if needed. Regularity is the strongest signal you can give your body clock.
What is the best bedroom temperature for sleep in spring?
Between 16–18°C is considered the optimal range for most adults. A lighter tog duvet and breathable bed linen, such as cotton percale or a bamboo blend, can help prevent overheating as nights get warmer.
How do I stop early morning light waking me up?
Blackout curtains or blinds are the most effective solution, particularly if your bedroom faces east. Layered window treatments can help if full blackout isn’t practical, and a comfortable eye mask provides additional darkness without any installation.
What tog duvet should I use in spring?
A 4.5 tog duvet is a good starting point for spring. If you sleep warm or your bedroom retains heat, you might prefer layering a lighter throw over a sheet. Layering gives you more control through the transitional months when temperatures can vary widely night to night.
Does changing your bedding really affect sleep quality?
Yes. Fabric weight and weave directly affect how well your bedding regulates temperature and moisture. A heavy winter duvet used through spring can cause overheating and night waking. Switching to a lighter tog and a breathable fabric, such as cotton or bamboo, helps your body maintain a stable temperature, which is one of the conditions your brain needs for unbroken sleep.
How long does it take to adjust to the clocks going forward?
Most people adjust within three to five days, though it can take up to a week for some, particularly children, older adults, and those who already have difficulty sleeping. Keeping a consistent wake-up time and getting morning daylight are the two most effective ways to speed up the transition.
Is it better to sleep with a window open in spring?
If you can do so safely and without too much external noise, a slightly open window helps with air circulation and can keep the bedroom closer to the 16–18°C range. Fresh air also helps reduce the build-up of CO2 in the room overnight, which some research has linked to lighter, less restorative sleep.
Spring doesn’t mean you need less sleep, it simply means your environment needs adjusting. By respecting your body clock, protecting your 7–9 hours, and refreshing your bedroom for the season ahead, you can move into lighter days feeling genuinely rested rather than running on empty.
This article was written in partnership with The Sleep Charity, the UK’s leading sleep support charity.
