When Do Babies Sleep Through the Night?

Many babies begin sleeping in longer stretches of 5 to 6 hours between 3 and 6 months, and a good number can go 6 to 8 hours or more without a night feed by around 6 months, though there is huge normal variation and night wakings well into toddlerhood are still common.

When you are up for the third time before midnight, few questions feel more urgent than when will my baby sleep through the night. The honest answer is that it depends on your baby, but there are clear age patterns that can tell you what is realistic to expect.

This guide breaks down what sleeping through the night really means, when it typically happens by age, why some babies get there sooner than others, and gentle ways to encourage longer stretches without rushing your baby before they are ready.

What Sleeping Through the Night Actually Means

It helps to reset expectations first. In sleep research and in most pediatric advice, sleeping through the night means an uninterrupted stretch of roughly 6 hours, not a solid 12 hours from bedtime to breakfast. So a baby who goes down at 7 pm and wakes at 1 or 2 am has technically slept through the night, even though it may not feel that way to you.

It also helps to know that all babies wake briefly between sleep cycles. The real milestone is not never waking, it is being able to link those cycles and resettle without needing a full feed or a lot of help. That skill develops gradually over the first year and beyond.

When Do Babies Sleep Through the Night, by Age

Every baby is different, but these age ranges reflect what pediatricians typically see:

• Newborn to 2 months: Babies wake every 2 to 3 hours to feed, day and night. Longer stretches are not expected, and you should feed on demand.
• 2 to 3 months: Some babies begin stretching to about 4 to 6 hours at night, though this is not yet reliable.
• 3 to 4 months: Many healthy, full term babies reach a 5 to 6 hour stretch. The 4 month sleep regression can temporarily interrupt this as sleep matures.
• 4 to 6 months: Longer and more consistent stretches become common. Many babies can go 6 to 8 hours, and some sleep through most of the night.
• 6 to 9 months: A lot of babies manage an 8 to 10 hour stretch, and many are ready to drop night feeds if growth is on track and their doctor agrees.
• 9 to 12 months and beyond: Most babies are capable of sleeping through the night, though teething, illness, and developmental leaps still cause wakings.

These are averages, not deadlines. Plenty of thriving babies take longer, and that is within the range of normal.

Why Some Babies Get There Sooner

A mix of factors shapes when a baby sleeps through the night. Feeding method plays a role, since breastfed babies often wake a little more frequently in the early months because breast milk digests quickly. Weight and growth matter too, because a bigger baby with plenty of daytime calories can physically go longer between feeds.

Temperament, the ability to self settle, and your baby’s sleep environment all factor in as well. Importantly, a baby sleeping longer is not a measure of good parenting or a well behaved baby. It largely reflects biology and development that unfold on their own timeline.

Gentle Ways to Encourage Longer Stretches

Once your baby is past the newborn stage and your pediatrician has confirmed they are growing well, a few habits can support longer night sleep:

• Keep age appropriate wake windows so your baby is tired enough for sleep but not overtired.
• Build a short, consistent bedtime routine, which research links to easier settling and better sleep.
• Offer full daytime feeds so more calories come in during the day.
• Give your baby a chance to resettle for a moment before rushing in, so they can practice linking sleep cycles.
• Keep the room dark, cool, and quiet, with white noise if you use it.

Never restrict feeds in a newborn or before your doctor gives the go ahead. If you are ready to reduce night feeds in an older baby, our night weaning guide walks through how to do it gradually and gently.

When Night Wakings Are Still Normal

If your baby slept longer and then started waking again, you are not back to square one. Sleep is rarely linear. Regressions around 4 months, 8 to 10 months, and later are tied to real developmental leaps, and teething and illness routinely disrupt sleep too.

Frequent night waking is extremely common through the first year and often into toddlerhood. It does not mean something is wrong with your baby or your approach. Our sleep regression ages guide can help you tell a normal developmental phase apart from a habit worth adjusting.

What the Research Says, and a Word on Safety

It helps to know just how normal night waking is. In one large study, about 38 percent of 6 month olds were not yet sleeping a straight 6 hour stretch, and even at 12 months a meaningful share of babies still woke at night. So if your baby is not there yet, they are in very good company.

If you have an older baby who is growing well and you want to encourage longer stretches, gentle, structured approaches can help. Bedtime fading involves shifting bedtime slightly later so your baby falls asleep faster, then gradually moving it earlier again. Graduated methods involve waiting brief, increasing intervals before responding, so your baby gets a chance to resettle on their own. Choose an approach you feel comfortable with, and check with your pediatrician first.

Keep safe sleep in mind as your baby sleeps longer. Always place your baby on their back in their own bare crib or bassinet, and follow safe sleep guidance to lower the risk of SIDS. Around 8 to 10 months, separation anxiety can also bring a wave of night waking even in babies who slept well before. This is a normal phase and usually passes with steady, reassuring responses.

Frequently Asked Questions