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When Do Babies Sleep Through the Night?

Most babies start sleeping through the night between 4–6 months, but every child is different. Learn what 'sleeping through' really means, signs your baby is ready, and how to gently encourage longer stretches of rest.

Published Oct 8, 2025•2 min read•
Peaceful sleeping baby under a soft blanket with night light glow

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When Do Babies Sleep Through the Night?

Every new parent dreams of the night their baby finally sleeps for hours without waking — but when does that actually happen? The truth is, there’s no single age when all babies sleep through the night. However, most little ones begin showing signs of longer, more consistent sleep between 4 and 6 months.

What “Sleeping Through the Night” Really Means

Many parents think it means eight to twelve hours of uninterrupted sleep. In reality, pediatricians define it as a stretch of at least six hours without needing to feed or be soothed.

Even when babies start “sleeping through,” short wake-ups between sleep cycles are normal — they often just learn to self-settle.

Good to know

If your baby wakes briefly but goes back to sleep on their own, they’re still considered to be sleeping through the night.

Typical Sleep Milestones

Here’s what most babies experience by age range (though every child is unique):

AgeAverage Night SleepNotes
0–2 months8–9 hours total (in short bursts)Feeds every 2–3 hours
3–4 months9–10 hours total (longer stretches)Begins forming sleep patterns
5–6 months10–11 hoursMay sleep 6–8 hours without waking
6–12 months11–12 hoursMost can sleep through the night
Remember

Growth spurts, teething, or illness can temporarily disrupt even the best sleepers — it’s completely normal.

How to Encourage Longer Sleep Stretches

A few gentle strategies can help your baby develop healthy sleep habits:

  • Establish a bedtime routine — consistent signals like bath, lullaby, and dim lighting teach your baby it’s time to sleep.
  • Set a predictable bedtime — babies thrive on rhythm; aim for roughly the same bedtime each night.
  • Encourage full daytime feeds — well-fed babies are less likely to wake hungry at night.
  • Keep nighttime interactions calm — dim lights and minimal talking help reinforce that nights are for sleeping.

When to Talk to Your Pediatrician

If your baby isn’t showing longer sleep stretches by around 9 months, or is waking excessively despite consistent routines, check in with your pediatrician. Sometimes, sleep issues are linked to growth patterns, reflux, or other treatable factors.

Final Thoughts

Every baby’s sleep journey is different — and “through the night” can look different from family to family. What matters most is steady progress and a gentle, consistent approach. Rest assured: with time, your baby (and you!) will enjoy longer, deeper sleep.

Explore more helpful tools for parents: try our Baby Growth Chart or estimate your child’s future height with our Child Height Predictor.

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