How much do babies sleep, age by age

In the first months, your baby's sleep can feel unpredictable: frequent wake-ups, naps at all hours, nights that blur into days. It's one of the questions parents ask most often: how much should my baby be sleeping? The answer is less fixed than you might expect. There are typical ranges to look at, but every baby is different and settles into their own rhythm in their own time.

This guide walks through what to expect age by age, with a section on safe sleep that deserves your full attention.

Newborn (0-3 months)

In the earliest weeks your baby sleeps a lot, often somewhere between 14 and 17 hours across a 24-hour day. That time isn't packed into the night, though: it's spread across many short naps, scattered through both day and night.

At this age a newborn doesn't yet tell day from night. Their internal clock is still developing and their sleep cycles are short, so they wake often, sometimes just to feed. Fragmented nights are exactly what you'd expect at this stage: frequent night waking in the early months is part of development, and it gradually eases over time.

Try not to worry if your baby sleeps a little less or a little more than another baby the same age. There's a wide range from one child to the next, and the numbers are only a starting point.

3 to 6 months

Around three months many babies start to sleep a little less overall, often between 12 and 15 hours a day. The bigger change is something else: longer stretches of night sleep begin to appear.

That doesn't mean every baby "sleeps through the night" overnight. Some babies lengthen their sleep periods, while others keep waking several times. Both fit within the wide variety of possible rhythms. During this stage day and night gradually become more distinct, and daytime naps tend to fall into a clearer pattern.

6 to 12 months

In the second half of the first year the need for sleep is still significant, often between 12 and 16 hours including naps. Usually at this age a baby takes two daytime naps, one in the morning and one in the afternoon, alongside more settled night sleep.

Night waking can still happen here too, perhaps linked to teething, changes in routine, or new developmental steps. Every baby is different: if the way yours sleeps leaves you with questions, talk it over with your pediatrician or health visitor, who can look at the whole picture knowing your child's history.

Why not to compare your baby with others

Among parents it's easy to swap numbers and comparisons. But sleep is a deeply individual thing. Two healthy babies of the same age can have very different sleep habits, and that's exactly how it should be. The hour ranges are there to give you a sense of what's typical, not to measure whether something is "going well" or "going badly." Rather than comparing, watch your own baby: if they seem content, are growing, feeding, and have their calm awake moments, you're already reading the right signals.

Safe sleep: the advice to follow

How your baby sleeps matters at least as much as how long they sleep. These points, shared by pediatricians, help lower the risks during sleep:

• Always on the back. Place your baby to sleep on their back, for naps and at night alike.
• In their own cot or crib. Let your baby sleep on a firm, flat surface in their own cot. For the first months keep it in the parents' room, close to your bed.
• A clear sleep space. No pillows, bumpers, soft toys, or loose blankets in the cot: the space where your baby sleeps should stay clear.
• Avoid overheating. Don't over-bundle your baby, and keep the room at a comfortable temperature.
• A smoke-free environment. Make sure the spaces where your baby lives and sleeps are free of smoke.

Kept up consistently, these simple habits become part of everyday sleep care.

When to talk to your doctor

Sleep is also a window onto your baby's wellbeing. It's worth contacting your doctor if you notice:

• excessive sleepiness, with few feeds and few wet nappies;
• difficulty breathing during sleep;
• marked snoring or pauses in breathing while asleep;
• or, quite simply, if you feel worried about their sleep or their rhythm.

You don't need a "serious" reason to ask: your doctor is the right person to turn to even just for reassurance. In an emergency, such as a baby who is struggling to breathe, call 999 or 111 (NHS, UK), 911 (US), or your local emergency number right away.

A rhythm that builds day by day

Your baby's sleep will shift many times over the first year, and each stage has its own balance. Taking a look at how naps and nights fall into place, day after day, helps you get to know their rhythm with more ease: jotting down sleep times with Bebiario is a simple way to follow that journey without relying on memory alone.