
A 15-month-old baby goes through several physical and emotional changes, which can impact their sleep. While there is no one-size-fits-all approach to baby sleep, a typical 15-month-old's sleep schedule includes 10-14 hours of night sleep and 2-3 hours of napping during the day. Most 15-month-olds are ready for bed between 7 pm and 8 pm, with a bedtime earlier than 7 pm on days when daytime sleep is insufficient. Sleep regression is common at this age, and it's important to be patient and encouraging while your toddler establishes good sleep habits.
| Characteristics | Values |
|---|---|
| Total Sleep | 11-14 hours |
| Night Sleep | 10-12 hours |
| Daytime Sleep | 2-3 hours |
| Number of Naps | 1-2 |
| Nap Duration | 2-3 hours |
| Bedtime | 7:00 PM-8:00 PM |
| Wake Windows | 4.5-5 hours |
| Sleep Regression | Common |
| Overtiredness | Common |
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What You'll Learn

Total sleep: 10-14 hours in a 24-hour period
A 15-month-old toddler should get a total of 10-14 hours of sleep in a 24-hour period. This includes 10-12 hours of night sleep and 2-3 hours of napping during the day.
Toddlers around 15 months old are in a transition phase between babyhood and toddlerhood. They are becoming more independent, but they still need their parents. They are also going through many physical and emotional changes, which can impact their sleep. It is important to remember that these numbers are averages, and each baby is different. Some babies need more sleep than average, while others need less. If your toddler is sleeping through the night and appears well-rested, energized, and happy, there is no need to worry about their sleep totals.
At this age, it is common for toddlers to transition from taking two naps per day to just one. This usually happens between 12 and 18 months. During this transition, it is normal for toddlers to need one nap on some days and two on others. To help your toddler move to one nap per day, set a routine so that they nap right after lunch. You can gradually move lunch earlier by about 15-20 minutes every two or three days until their nap starts at about 1:00 pm. Keeping your toddler's routine consistent is important during this time.
If your 15-month-old is waking up at night, there could be many reasons. One reason could be that they are overtired. This can happen when a nap is dropped before a baby is truly ready, making it hard for them to fall asleep and stay asleep. If your toddler is struggling to sleep through the night, try moving their bedtime earlier by 20-30 minutes. It is also important to help them learn to fall asleep independently at bedtime, as this will help them return to sleep on their own after natural night wakings.
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Night sleep: 10-12 hours
At 15 months old, your toddler is at an interesting stage of development. They are gaining independence, but they still need you, and they need to sleep through the night as their bodies are much busier.
A typical bedtime for a 15-month-old is between 7 pm and 8 pm. However, some parents prefer an 8 pm bedtime, and you shouldn't go later than this as your child's body clock won't like it. If your child is in daycare, their bedtime may be set by their daycare schedule.
Most 15-month-olds need around 11-14 hours of sleep over a 24-hour period, including night sleep and naps. This equates to around 10-12 hours of night sleep and 2-3 hours of napping during the day.
If your 15-month-old is still taking two naps, you may need shorter wake windows of around 2 hours 45 minutes to 3 hours. If they have transitioned to one nap, they can handle bigger wake windows.
It's important to remember that these are averages, and every baby is different. Some babies need more sleep, while others need less. If you're concerned about your child's sleep, contact your healthcare provider.
If your 15-month-old is waking up at night, there could be many reasons. Here are some tips to help them sleep through the night:
- Ensure they are comfortable and healthy.
- Check if they are overtired. When a nap is dropped before a baby is ready, they can become overtired, making it hard to fall asleep and stay asleep. Try decreasing their wake windows slightly.
- Assess if they truly need you when they call for you at night. Respond to their needs, but be careful not to create a habit that becomes a preference. Be accessible but not excessive.
- Help them learn to fall asleep independently. Toddlers who can fall asleep on their own tend to sleep better. Consider swapping their bedtime feed with a snack before the bedtime routine.
- Keep their bedtime routine consistent.
- If they recently transitioned to one nap, try moving their bedtime earlier by 20-30 minutes.
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Naps: 2-3 hours, 1-2 naps
A 15-month-old baby typically needs between 11 and 14 hours of sleep over a 24-hour period. This includes 10-12 hours of night sleep and 2-3 hours of daytime sleep, spread over 1-2 naps.
The transition from two to one nap a day usually happens between 12 and 18 months. It is common for babies to go back and forth during this transition, needing two naps one day and one the next.
To help your baby transition to one nap a day, set a routine so that they nap right after lunch. You can start by making lunch as early as you would like, then push it back by 15-20 minutes every two or three days until you get to a naptime of about 1:00 pm. Keeping your baby's naptime routine similar to their bedtime routine will also help them transition more easily.
If your baby has recently transitioned to one nap, try decreasing their wake windows slightly. If they are on the lower end of the age-appropriate wake window range, slowly add a bit more time to each wake window. A gradual increase will help prevent your baby from becoming overtired.
If your baby is still taking two naps, their wake windows will be shorter. A 15-month-old taking two naps will usually have a wake window of 2 hours 45 minutes to 3 hours after morning wake time before their first nap.
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Bedtime: 7-8 pm
A 15-month-old baby typically needs 11 to 14 hours of sleep in a 24-hour period. This usually equates to 10-12 hours of night sleep and 2-3 hours of napping during the day.
Most 15-month-olds are ready for bed between 7 pm and 8 pm. However, if your baby is on a later schedule, their bedtime will be later, and that's okay if it works for you. If your baby's bedtime is after 8 pm, you may start to see more disrupted sleep overnight. In this case, you could try moving their bedtime earlier for a couple of weeks. An earlier bedtime of 6 pm to 6:30 pm can also be helpful on days when daytime sleep doesn't go as planned.
At 15 months, your baby is at an interesting stage of development. They have the face and body of a baby but are starting to show the independence of a toddler. They want independence but still need you, and they need to sleep through the night more now because their bodies are much busier.
At this age, it's important to start setting boundaries and expectations around sleep. You can do this by being accessible but not excessive in your response to their needs. For example, if your baby calls for you or cries a little in the middle of the night, you might wait a short time before answering. Then, you can quietly remind them that it's time to sleep. It's normal for toddlers to wake up in the night from time to time, and it takes a while for them to establish good sleep habits. Encourage them to self-soothe and fall back to sleep on their own.
To help your 15-month-old sleep through the night, you can also start weaning them off their bedtime feed. If they're still being fed right before bed, try swapping the feed for a snack before starting your bedtime routine. You can also help your baby develop good sleep habits by keeping a consistent bedtime routine and encouraging independent sleep. Reading together at bedtime can be a great way to help your baby unwind and get into a sleep routine.
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Sleep regression: when sleep goes well then suddenly regresses
A 15-month-old baby typically needs around 13.5 hours of sleep over a 24-hour period. This usually equates to around 11 hours of uninterrupted nighttime sleep and 2.5 hours of daytime naps, spread over one or two naps. However, these numbers are just averages, and every baby is different. Some babies need more sleep than average, while others need less.
Sleep regression can occur at any time, but it is often associated with specific developmental milestones. At 15 months old, your toddler is undergoing significant physical and emotional changes, including newfound independence, which can lead to resistance to sleep. They may also be experiencing separation anxiety, which can make sleep more challenging. Additionally, teething can be a temporary cause of sleep disruptions.
If your 15-month-old is experiencing sleep regression, it is important to remain consistent with your sleep routine. Sticking to the usual bedtime and nap schedule will signal to your toddler that sleep is coming every night at the same time. You can also encourage independent sleep skills and work on establishing healthy sleep habits during this time.
Sleep regression at this age is usually temporary and should resolve within a few weeks. If you are concerned about your child's sleep patterns, it is always best to consult with a healthcare professional.
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Frequently asked questions
Most 15-month-olds need around 11-14 hours of sleep in a 24-hour period. This includes 10-12 hours of night sleep and 2-3 hours of napping during the day.
A typical bedtime for a 15-month-old is between 7 pm and 8 pm. However, this may vary depending on their daily schedule and needs. If your toddler has recently started waking up at night, try moving their bedtime earlier by 20-30 minutes.
Many 15-month-olds take just one nap, but some may still be taking two. Between 12 and 18 months, toddlers transition from two naps to one per day. During this transition, it is normal for them to take one nap on some days and two on others.
There could be several reasons for this, including sleep regression, illness, teething, or changes in their sleep schedule. Sleep regression at 15 months is often due to factors such as illness, travel, or teething. It is important to assess their needs and respond accordingly.











































