If you're a new parent wondering, “When will my baby sleep through the night?”, you're definitely not alone.

It is one of the most common questions parents ask during the first year of a baby's life. Some babies begin sleeping for longer stretches surprisingly early. Others continue waking during the night well into later infancy.

So, when do babies actually sleep through the night?

The short answer: there is no single age when every baby should sleep through the night. Sleep develops gradually, and normal sleep patterns vary considerably from one baby to another.

Some babies between 3 and 6 months may begin sleeping for stretches of 5–8 hours or longer at night, while others continue waking regularly. Newborns generally wake much more frequently because they have small stomachs and need regular feeding.

Understanding what is developmentally normal can help parents set realistic expectations and focus on something even more important than sleeping for a certain number of hours: healthy and safe sleep.

What Does “Sleeping Through the Night” Actually Mean?

One reason parents receive so many different answers is that “sleeping through the night” does not always mean sleeping from 7 p.m. until 7 a.m. without waking.

Parents may use the phrase to mean:

sleeping 5–6 hours continuously;
sleeping 8 hours;
no longer needing a night feeding; or
going from bedtime until morning without needing parental help.

These are very different milestones.

Babies also naturally move through sleep cycles during the night. Brief awakenings can occur between sleep cycles, even when parents never notice them.

For this reason, a baby who occasionally wakes at night is not necessarily a “bad sleeper.”

When Do Babies Start Sleeping Through the Night?

Every baby's development is different, but sleep generally becomes more organized as the nervous system matures.

Newborns: 0–3 Months

Newborn sleep is very different from adult sleep.

During the first few months, babies commonly sleep in relatively short periods throughout both the day and night.

Newborns also need frequent feeding, making long uninterrupted nighttime sleep unlikely.

At this stage, parents generally should not expect a predictable all-night sleep schedule.

The American Academy of Pediatrics notes that babies do not develop regular sleep cycles until approximately 4 months of age.

The priority during the newborn period should therefore be:

feeding, responsive care, healthy development and safe sleep — not forcing a baby to sleep through the night.

3–6 Months: Longer Sleep Stretches May Begin

Between approximately 3 and 6 months, many parents begin noticing longer periods of nighttime sleep.

According to the UK's National Health Service (NHS), babies at this stage may need fewer nighttime feeds, and some babies may sleep for 5–8 hours or longer at night.

However, this does not happen for every baby.

One 4-month-old may sleep for a long stretch while another healthy baby of the same age may still wake several times.

Both patterns can occur.

6–12 Months: Nighttime Sleep Often Becomes More Consolidated

As babies grow, many become capable of longer periods of nighttime sleep.

Some babies between 6 and 12 months may no longer require nighttime feeding, depending on their individual growth, nutritional needs and medical circumstances.

But longer sleep does not necessarily mean uninterrupted sleep every night.

Babies may temporarily begin waking more often because of:

hunger;
teething discomfort;
illness;
developmental changes;
changes in routine;
separation awareness;
travel or environmental changes.

Sleep development is rarely perfectly linear.

A baby may sleep beautifully for several weeks and suddenly begin waking again.

That doesn't necessarily mean anything has gone wrong.

How Much Sleep Does a Baby Actually Need?

Parents sometimes focus so heavily on nighttime sleep that they overlook total sleep across 24 hours.

For infants 4–12 months old, the American Academy of Sleep Medicine recommends approximately:

12–16 hours of sleep per 24 hours, including naps.

This recommendation has also been endorsed by the American Academy of Pediatrics.

Individual sleep needs can still vary.

Rather than comparing your baby's nighttime sleep with another baby's, it can be more useful to consider the entire 24-hour sleep pattern.

Why Does My Baby Still Wake Up at Night?

Night waking can be frustrating for exhausted parents, but it is also a normal part of infancy.

There are many possible reasons.

1. Hunger

Young babies have small stomachs and may need frequent feeding.

Whether a particular baby still requires nighttime feeding depends on factors including age, growth and feeding needs.

Parents who are unsure whether their baby can safely reduce night feeds should discuss this with their pediatrician or qualified healthcare professional.

2. Developing Sleep Cycles

Newborn sleep architecture is immature.

As babies develop, their sleep becomes more organized, but they may still partially or fully wake between sleep cycles.

3. Developmental Changes

Rolling, sitting, crawling and other developmental milestones can temporarily affect sleep.

A baby's brain is processing an extraordinary amount of new information during the first year.

4. Teething or Illness

Physical discomfort can temporarily disrupt an otherwise stable sleep routine.

5. Changes in Environment or Routine

Travel, changes in caregivers, daylight changes or an inconsistent bedtime routine may influence sleep.

6. Your Baby Is Simply Developing at Their Own Pace

Perhaps the most important point is also the simplest:

Babies are individuals.

Two healthy babies of exactly the same age can have very different sleep patterns.

Is It Normal for a 6-Month-Old to Still Wake at Night?

Yes.

While some 6-month-old babies sleep for long stretches, others still wake during the night.

Night waking alone does not automatically indicate that something is wrong.

Instead of comparing your baby's sleep with another family's experience, consider the broader picture:

Is your baby growing appropriately?
Is your baby feeding normally?
Is your baby generally alert and engaged while awake?
Is your baby getting an appropriate amount of total sleep?
Are you following safe sleep practices?

If you are concerned about unusually frequent waking, feeding, breathing, growth or your baby's overall health, speak with your pediatrician.

How Can I Help My Baby Develop Healthy Sleep Habits?

There is no technique that guarantees a baby will sleep through the night.

However, parents can gradually create an environment that supports healthy sleep development.

1. Create a Consistent Bedtime Routine

Babies learn through repetition.

A simple routine might include:

Bath → Feeding → Quiet Time → Book → Bed

The exact routine matters less than making it calm and reasonably consistent.

2. Help Your Baby Learn the Difference Between Day and Night

During daytime hours:

open the curtains;
interact and play;
talk normally;
allow ordinary household sounds.

At night:

keep lighting low;
speak quietly;
minimize stimulation;
keep nighttime feeds and diaper changes calm.

These environmental cues can gradually help babies develop their day-night rhythm.

3. Watch for Sleepy Cues

Waiting until a baby becomes extremely overtired can sometimes make settling more difficult.

Possible signs of tiredness include:

yawning;
rubbing the eyes;
becoming quieter;
fussiness;
reduced interest in play.

As you spend more time with your baby, their individual sleep cues often become easier to recognize.

4. For Older Babies, Consider Putting Them Down Drowsy but Awake

The American Academy of Pediatrics suggests that for babies approximately 4 months and older, putting a baby down when drowsy rather than waiting until they are completely asleep may help them gradually learn to fall asleep independently.

Not every baby responds in exactly the same way, so parents should avoid treating this as a rigid rule.

Safe Sleep Is More Important Than Longer Sleep

When parents are exhausted, products or techniques promising “longer sleep” can sound extremely appealing.

But sleep duration should never come at the expense of safe sleep.

Current U.S. safe-sleep guidance recommends that babies:

Always be placed on their backs for sleep

Place your baby on their back for naps and nighttime sleep.

Sleep on a firm, flat surface

Use a firm, flat, non-inclined sleep surface intended and approved for infant sleep, such as an appropriate crib or bassinet mattress with a fitted sheet.

Have their own sleep space

Room sharing is different from bed sharing.

The CDC recommends keeping the baby's sleep area in the same room as the caregiver, ideally until the baby is at least 6 months old, while maintaining a separate sleep surface.

Have an uncluttered sleep environment

Keep soft objects and loose bedding out of the baby's sleep area, including:

pillows;
loose blankets;
bumper pads;
stuffed toys; and
other soft objects.

These precautions are designed to reduce the risk of sleep-related infant death, including accidental suffocation and Sudden Infant Death Syndrome (SIDS).

What If My Baby Falls Asleep in a Swing, Car Seat or Bouncer?

Babies sometimes fall asleep while traveling or during everyday activities.

However, sitting or inclined products are not substitutes for a proper infant sleep environment.

If a baby falls asleep in a car seat, stroller, swing, bouncer or another inclined device outside its intended transportation context, caregivers should move the baby to an appropriate firm, flat sleep surface as soon as practical.

Never add pillows, cushions or positioning products to try to make an inclined product more comfortable for sleep.

Should I Wake My Baby for Feeding?

This question cannot be answered solely based on age.

Whether a baby should be awakened for feeding can depend on:

age;
birth history;
weight gain;
feeding method;
growth;
medical conditions; and
recommendations from the baby's healthcare professional.

Newborns in particular often need frequent feeding.

If your baby suddenly begins sleeping much longer than usual and you are uncertain whether feeds can safely be skipped, ask your pediatrician rather than relying on a generic sleep schedule found online.

When Should Parents Talk to a Pediatrician About Baby Sleep?

Most night waking is normal, but professional advice is appropriate whenever you are concerned about your baby's health or development.

Contact your pediatrician or healthcare professional if you have concerns about issues such as:

feeding or inadequate weight gain;
unusual difficulty waking your baby;
significant changes in normal behavior;
persistent sleep difficulties affecting your baby's wellbeing;
unusual or concerning breathing during sleep; or
any other symptoms that concern you.

Seek urgent medical attention for serious breathing difficulties, unresponsiveness or other medical emergencies.

Frequently Asked Questions

When do most babies sleep through the night?

There is no universal age. Some babies begin sleeping for longer nighttime stretches between approximately 3 and 6 months, while others continue waking regularly beyond that age.

Individual variation is normal.

Can a 3-month-old sleep through the night?

Some babies around this age may begin sleeping for longer stretches, but many still wake for feeding and comfort.

Parents should follow their healthcare professional's feeding guidance, particularly for young infants.

Can a 4-month-old sleep through the night?

Some can sleep for longer stretches, but waking during the night remains common.

Around 4 months, infant sleep cycles also begin becoming more regular.

Should a 6-month-old sleep through the night?

There is no rule saying every healthy 6-month-old must sleep uninterrupted through the night.

Some do. Others don't.

Is it normal for a baby to wake every few hours?

For young babies, yes. Frequent waking is especially common during the newborn months.

As babies mature, nighttime sleep often becomes progressively more consolidated.

Does sleeping through the night mean my baby never wakes?

Not necessarily.

Like adults, babies move through different stages and cycles of sleep. Brief awakenings can occur naturally.

The important developmental change is often not eliminating every awakening, but gradually becoming better able to transition between sleep cycles.

How much should a 4–12-month-old baby sleep?

The American Academy of Sleep Medicine recommends 12–16 hours per 24 hours, including naps, for infants aged 4–12 months.

The Bottom Line

So, when do babies sleep through the night?

There isn't one correct age.

Newborns typically wake frequently and require regular feeding. Between approximately 3 and 6 months, some babies begin sleeping for longer nighttime stretches. As babies continue developing through the first year, nighttime sleep often becomes more consolidated.

But every baby develops differently.

Instead of measuring successful sleep by whether your baby matches another family's schedule, focus on:

safe sleep, appropriate feeding, adequate total sleep, a consistent routine and your baby's individual developmental needs.

And remember: waking during the night does not automatically mean your baby has a sleep problem.

Sometimes, it simply means you have a baby.

Medical & Safety Disclaimer

This article is provided for general educational purposes only and is not medical advice. Every baby has different health, feeding and developmental needs. Always consult your pediatrician or other qualified healthcare professional regarding questions about your baby's sleep, feeding, growth or health.

For current infant safe-sleep recommendations, parents should consult authoritative public-health and pediatric sources such as the U.S. Centers for Disease Control and Prevention (CDC) and the American Academy of Pediatrics (AAP).

References

Centers for Disease Control and Prevention (CDC) — Providing Care for Babies to Sleep Safely.

American Academy of Pediatrics / HealthyChildren.org — Getting Your Baby to Sleep; Sleeping Through the Night.

American Academy of Sleep Medicine (AASM) — Recommended Amount of Sleep for Pediatric Populations: A Consensus Statement.

National Health Service (NHS) — Your Baby's Sleep Patterns; Helping Your Baby to Sleep.

Last reviewed: August 2026

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When Did Your Baby Sleep Through the Night? A Science-Based Guide for Parents with SunloveKids