When Should My Baby Sleep Through the Night?
What "sleeping through the night" actually means, the age ranges where it typically becomes realistic, and what to do if your baby isn't there yet.
It's one of the most-asked questions in baby sleep, and also one of the most misleading, because "sleeping through the night" doesn't mean what most parents assume it means, and expecting the wrong thing at the wrong age is a fast route to feeling like something's wrong when nothing is.
Last updated 19th October 2026. Written with Chantal Murphy, IACSC-certified sleep consultant.
What "sleeping through" actually means
Clinically, sleeping through the night is usually defined as a stretch of five to six consecutive hours without needing help, not twelve hours of unbroken sleep. Every baby, toddler, and adult briefly stirs at the end of each sleep cycle throughout the night; "sleeping through" really describes a baby who can resettle through most of those stirrings without calling out for you, not one who never wakes at all. Our guide to resettling and linking sleep cycles covers the mechanics of this in full.
Typical age ranges
| Age | What's realistic |
|---|---|
| 0–3 months | Frequent waking for feeds is normal and expected — not a stretch to aim for yet |
| 3–6 months | Many babies start stringing together 5–6 hour stretches, though not consistently |
| 6–12 months | A 6–8 hour stretch becomes realistic for many babies with consistent sleep skills in place |
| 12+ months | 10–12 hours overnight with minimal or no waking is common, though occasional wakes (illness, teething, regressions) still happen |
These are ranges, not guarantees — a baby's genetics, temperament, feeding needs, and sleep environment all play a role, and a baby who's a little later to this milestone than a friend's isn't behind, just different.
What it actually takes to get there
Age-appropriate wake windows. A baby who's chronically overtired or undertired during the day tends to sleep less consolidated overnight, regardless of age. Keeping wake windows in the right range is one of the most direct levers available.
The ability to self-settle. This is the single biggest factor. A baby who can fall asleep independently at bedtime usually has what they need to resettle independently at the natural stirrings throughout the night too, which is the actual mechanism behind "sleeping through."
Enough calories during the day. Especially under 6 months, a baby who isn't getting enough during waking hours will often make it up overnight. This isn't something to fight against, it resolves naturally as solids and daytime intake increase.
A consistent, predictable sleep environment. The same dark room and steady white noise all night, every stirring, removes one more reason a brief cycle-transition wake turns into a fully alert one.
Common mistakes chasing this milestone
Expecting it too early. A 2-month-old who wakes every three hours is doing exactly what's developmentally appropriate, not falling behind. Pushing for consolidated sleep before a baby's biology supports it usually backfires.
Treating a single good night as "arrived." One long stretch doesn't mean the skill is fully established, consistency over one to two weeks is a much better signal than any single night.
Comparing to other babies. The age range for this milestone is genuinely wide. A baby sleeping through at 4 months and a baby doing it at 10 months can both be completely on track.
When to get professional help
If your baby is well past the typical range for their age and still waking frequently, or you're not sure what's standing in the way, it's worth a second opinion. Consider booking a consultation if:
- Your baby is over 6 months and still waking multiple times most nights
- You're not sure whether what you're seeing is age-appropriate or a fixable habit
- You've tried adjusting wake windows and the environment without much change
- You'd like a plan built around your baby's specific situation
Wondering if your baby should be sleeping through by now?
Let's work out what's realistic for your baby's age and build a plan to get there. Book a consultation with Chantal.
Frequently asked questions
Does "sleeping through the night" mean 12 hours straight with no waking?
No, clinically it usually means a 5–6 hour stretch without needing help, not zero waking. Brief, silent stirrings at the end of each sleep cycle are normal for everyone, at every age.
What age should I expect my baby to sleep through?
Many babies start managing longer stretches from around 3–6 months, with a more consistent 6–8+ hour pattern common from 6–12 months. It's a wide range, and later within it is still entirely normal.
My baby slept through once and then stopped — did we lose the skill?
Almost certainly not. Teething, illness, developmental leaps, and regressions all cause temporary disruption even after the skill is established. It typically returns once the disruption passes.
Is it my fault my baby still wakes at night?
No. Night waking is influenced by age, temperament, feeding needs, and development, most of which aren't within a parent's control. It's a skill that can be built with the right conditions, not a reflection of anything done wrong.
You're closer than you think
"Sleeping through the night" is a real, achievable milestone, but it's also a narrower, more specific thing than most parents picture, and knowing what it actually means takes a lot of the pressure off. If your baby isn't there yet, there's almost always a clear next step to work on.
If you'd like help figuring out exactly what that next step is, book a consultation and let's build a plan together.
with expert, gentle support
