What Age Do Babies Sleep Through The Night?

Understanding When Babies Sleep Through the Night

The question of when babies begin to sleep through the night is one that many new parents eagerly ask, often seeking a precise answer. Generally, most babies start to sleep through the night—defined as sleeping for about six to eight consecutive hours—between the ages of 3 to 6 months. However, it’s essential to understand that this timeline can vary from one baby to another due to numerous factors.

Factors Affecting When Babies Sleep Through the Night

Several aspects influence when a baby might start sleeping through the night. These considerations range from physical development to environmental and behavioral factors. Here’s a deeper look:

1. Newborn Sleep Patterns

In the initial few months of life, babies do not follow a specific nighttime versus daytime sleep schedule. Newborns typically sleep in short bursts, about two to four hours at a time, both day and night. This pattern is rooted in their need for regular feedings, particularly if they are breastfed, and their developmental stage.

2. Developmental Milestones

By the age of three months, babies often start to sleep for longer stretches during the night, but this change is closely tied to their developmental milestones. As their stomachs grow bigger, they can take in more milk at each feeding, which helps them feel full longer and, consequently, sleep longer.

3. Physical Growth and Nutritional Needs

Physical growth surges and nutritional needs play a significant role in a baby’s sleep patterns. Infant sleep disruptions can often be attributed to growth spurts, which occur around various ages, such as three weeks, six weeks, three months, and six months. These periods may temporarily affect sleep as the baby requires more frequent feedings to support rapid growth.

4. Establishing a Sleep Routine

Creating a consistent sleep routine can encourage longer sleep stretches. Setting a bedtime and having regular sleep-time rituals, like a warm bath, storytime, or lullabies, can help signal to your baby that it is time to wind down.

5. Sleep Environment

A conducive sleep environment can also help. Babies often sleep better in a quiet, dark room at a comfortable temperature. Investing in a good mattress designed for infants can make a significant difference. Ensure the crib or bassinet complies with the latest safety standards to minimize any risk and to provide a secure and comfortable sleep space for the baby.

6. Medical and Health Conditions

Certain health conditions may impact how well and how long a baby can sleep. Reflux, allergies, and colic can disrupt sleep patterns. It’s important to consult a pediatrician if you suspect a medical condition is affecting your baby’s sleep.

Typical Sleep Progression Stages

As babies grow, their sleep needs and patterns evolve. Understanding these stages can help manage expectations and implement strategies that support better sleep.

Newborn to Three Months

In these early months, babies need a lot of sleep, ranging from 14 to 17 hours a day. However, this sleep is fragmented into short periods, as they need regular feedings. It’s normal for babies at this age to wake up frequently during the night as part of their need to eat and be comforted.

Three to Six Months

During this period, many babies start consolidating their sleep into longer nighttime sessions, often sleeping for five to six hours at a stretch. Establishing a soothing bedtime ritual and maintaining a consistent sleep schedule can help babies begin to sleep through the night around this age.

Six to Nine Months

By this age, a baby’s nocturnal sleep might extend to six to eight hours, potentially allowing them to sleep through the night. However, factors such as teething and separation anxiety—as babies become more aware of their surroundings and their caregivers—can cause temporary sleep regressions.

Nine to Twelve Months

Many babies naturally extend their nighttime sleep to nine to twelve hours. By this stage, they might also take two to three naps during the day. Consistency in bedtime routines and sleep environment remains crucial during this period.

Signs Baby Is Ready to Sleep Through the Night

Knowing when your baby is ready to sleep through the night involves observing specific signs. Some common indicators include:

1. **Longer Stretches of Sleep**: If your baby is naturally starting to sleep for longer periods at night, this is a good sign they are moving towards sleeping through.

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2. **Decreased Nighttime Feeds**: If your baby is showing less interest in nighttime feedings or appears full and content longer after regular feedings, they might be ready to drop nighttime feeds.

3. **Consistent Bedtime Routine**: If your baby responds well to a bedtime routine, it can mean they are ready for more structured nighttime sleep.

4. **Good Weight Gain**: Babies who are gaining weight at a healthy rate are better equipped to manage longer periods of sleep without needing to feed.

Parental Strategies to Encourage Nighttime Sleep

While babies may naturally begin sleeping through the night as they grow, certain strategies can encourage this development. Parents can adopt behaviors and routines that nurture better sleep habits.

1. Consistency Is Key

Maintain a consistent bedtime and sleep routine. Babies thrive on regular schedules as it helps them feel secure and understand what to expect.

2. Create a Calming Routine

Develop a calming routine before bedtime. Activities like a warm bath, reading a book, or singing lullabies can signal to your baby that it’s time to sleep.

3. Ensure a Good Sleep Environment

A quiet, dark, and cool room can improve sleep quality. Consider using blackout shades, white noise machines, or other tools to create a sleep-conducive environment.

4. Responding to Night Waking

When your baby wakes up at night, respond gently but avoid stimulating activities. Keep interventions as brief and quiet as possible to encourage the baby to return to sleep.

Common Challenges and How to Address Them

Throughout their first year, babies may encounter various challenges that affect their sleep patterns. Understanding these can help parents mitigate the impact and support better sleep for their baby.


Teething can disrupt sleep as it might cause discomfort. Using teething ointments or pain relievers recommended by a pediatrician can provide relief. Additionally, maintain the usual bedtime routine to offer comfort.

Growth Spurts

During growth spurts, babies might wake up more frequently to feed. While this can temporarily disrupt sleep, it usually resolves within a few days. Ensure extra feedings and reassure your baby during these times.

Sleep Regression

Sleep regression can occur around four months and may happen again at other developmental stages. This is a temporary phase where a baby’s previously established sleep patterns are interrupted. Sticking to the routine and comforting the baby can help navigate these periods.

Separation Anxiety

As babies develop, they become more conscious of their environment and begin to form attachments. Separation anxiety often peaks at about eight to twelve months. You can ease this by ensuring your baby feels safe and secure at bedtime, perhaps by giving them a comfort object.

When to Seek Professional Advice

If, despite all efforts, your baby continues to struggle with sleep, it may be worth seeking professional advice. Consultations with a pediatrician or a sleep specialist can provide tailored strategies and identify any underlying issues.

Finishing Thoughts

Every baby is unique, and when they start sleeping through the night can vary widely. While many babies achieve this milestone between three to six months, it largely depends on their development, behavior, and environment. By fostering a supportive sleep environment, establishing consistent routines, and addressing any challenges promptly, parents can help their babies develop healthy sleep habits. Patience and perseverance are key, as establishing a good night’s sleep is a gradual process driven by the baby’s growth and adaptation. Therefore, while each night may present new challenges, they are steps toward building a healthy sleep routine that benefits both the baby and the family.


  • Ashton Roberts

    I love learning and sharing everything about sleep. I am one of the energetic editors here at GoodSleepHub, where I talk about how to get a better night's sleep. When I'm not writing, I'm probably walking my dog Luna or trying out new sleeping gadgets. My goal is to help you sleep easier and better. Join me, and let's find simple ways to enjoy great sleep every night!

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