18 Month Old Sleep Schedule: Naps, the 18-Month Regression and Bedtime

Eighteen months is the age when a lot of parents who thought sleep was behind them suddenly find themselves back on the internet at midnight. Your toddler is walking, climbing, and telling you no with real conviction, and their sleep often reflects all of that new independence. Most people searching for an 18 month old sleep schedule are dealing with one specific thing: a good sleeper who has started fighting the nap, resisting bedtime, or waking overnight when they had not done so in months.

Here is the honest version. The 18-month sleep regression is real, and many parents rank it among the hardest. It is not a sign that your schedule broke or that you did something wrong. It is a collision of separation anxiety, a fierce new drive for independence, molars pushing through, and the first nightmares appearing. The schedule below is your anchor. The regression is the storm that passes over it.

This guide covers how much sleep an 18 month old needs, a sample one-nap day, what our survey of tens of thousands of parents shows about night waking at this age, and how to hold your boundaries kindly through nap strikes and bedtime resistance. Whether you call it an 18 month sleep schedule or an 18 month old sleep schedule, the goal is the same: a steady frame you can lean on while the regression runs its course.

At a Glance: 18 Month Sleep Expectations

At eighteen months, most toddlers sleep 11 to 14 total hours per day: roughly 10 to 12 hours overnight plus 1.5 to 3 hours in a single afternoon nap. Wake windows stretch to about 5 to 5.5 hours, and bedtime typically falls between 7:00 and 8:00 p.m.

Here is some perspective from Betteroo’s State of Baby Sleep survey: among toddlers aged 13 to 18 months, 53.5% still wake three or more times a night (n=5,002). If your eighteen month old is waking, you are in the majority, and the overall trend keeps bending downward from the earlier infant peak. Waking at this age is common; it does not mean something is wrong.

How Much Should an 18 Month Old Sleep?

The American Academy of Sleep Medicine recommends 11 to 14 hours per 24 hours for children aged 1 to 2 years, naps included ¹. Most eighteen month olds land squarely in that range, and reference studies of early-childhood sleep show broad, healthy variation around those numbers ².

Sleep Type	Typical Range at 18 Months
Total Sleep	11–14 hours
Night Sleep	10–12 hours
Naps	1 per day (1.5–3 hours)
Wake Windows	5–5.5 hours

By eighteen months, the single afternoon nap is firmly established for most toddlers. The 2-to-1 nap transition happens somewhere between 14 and 18 months, so if your child only recently dropped to one nap, expect a few weeks of slight overtiredness while daytime sleep consolidates into that one longer block. A nap strike at this age rarely means your toddler is ready to drop napping entirely. Most children keep an afternoon nap well into their third year.

A Sample 18 Month Old Sleep Schedule (An Example, Not a Rule)

• 7:00 a.m. – Wake
• 12:30–2:30 p.m. – Nap
• 7:30 p.m. – Bedtime

Notice the shape of the day: a long morning wake window (about 5.5 hours) leading into an early-afternoon nap, then roughly 5 hours from the end of the nap to bedtime. That final stretch is where bedtime resistance tends to live. If your toddler fights bedtime, the last wake window is usually the first thing to adjust. Slightly too short and they are not tired enough; slightly too long and they are overtired and wired.

Bedtime between 7:00 and 8:00 p.m. is where most families land. In our survey, 39% of all babies have a bedtime between 7:00 and 7:59 p.m., the single most common window. A consistent bedtime anchored by a predictable, calming routine is one of the most evidence-backed sleep tools you have, and it matters even more during a regression ³.

The 18-Month Sleep Regression: Why This One Hits Hard

If sleep fell apart recently and your toddler is right around a year and a half, you are almost certainly in the 18-month regression. Many parents find it the toughest of the toddler regressions, because several forces arrive at once:

• Separation anxiety, round two. Your toddler now understands time and absence in a new way. They know bedtime means hours apart from you, and they will protest it with everything they have.
• Independence and testing. This is the age of no. Your child is discovering they can push back, and bedtime and naptime become the natural stage for it. Refusing the nap is often less about sleep and more about control.
• Molars. The first-year molars are working their way in, and they can ache for days at a time. Pain that fades during the busy day tends to resurface at night.
• Nightmares beginning. Imagination is coming online, and with it the first bad dreams. A toddler who wakes frightened and clingy is not manipulating you; they genuinely need reassurance.

The two most common shapes this takes are the nap strike and bedtime resistance. During a nap strike, your toddler lies in the crib chatting, standing, or crying rather than sleeping. Hold the nap window steady for at least a week or two before assuming anything has changed. With bedtime resistance, the protest ramps up right at lights-out. Our dedicated 18 month sleep regression guide breaks down each pattern and how long it typically lasts.

Holding Boundaries Kindly Through the Regression

The hardest part of this age is that your toddler needs both firm limits and warm reassurance, at the same time. Those are not in conflict. A few high-leverage moves:

• Keep the schedule steady. This is not the moment to overhaul the day. Predictability is what your toddler leans on when everything else feels big. Protect the nap window and the bedtime even when a single day goes sideways.
• Name the feeling, hold the limit. “You want me to stay. I know. It is time to sleep, and I love you.” You can honor the emotion without changing the boundary. Toddlers settle faster with a calm, consistent limit than with negotiation.
• Ride out the nap strike. Keep offering the nap at the same time in the same way. Most strikes break within one to two weeks. Dropping the nap in response usually backfires into an overtired, harder night.
• Treat pain and fear directly. If molars are the issue, talk to your pediatrician about comfort measures. If nightmares wake your child, go in, reassure briefly, and keep it low-key so the middle of the night does not become playtime.
• Watch the wake windows, not just the clock. Our wake windows guide shows how the day stretches through toddlerhood, and small tweaks to that last window often solve bedtime battles.

If your toddler never learned to fall asleep independently, or old habits crept back, eighteen months is still a workable age for gentle change once the peak of the regression passes. Research shows bedtime routines alone significantly reduce night wakings, and toddlers respond quickly to consistency ³. Wait for a calmer stretch, then hold your approach steady.

When to Talk to a Pediatrician

Reach out if your toddler consistently sleeps well under 11 total hours, snores or has breathing pauses, wakes screaming inconsolably most nights beyond a typical regression window, or if you have concerns about pain, growth, or development. And keep the crib safe now that climbing is in play: mattress at its lowest setting, no pillows or bulky bedding, and consider a toddler bed only when your child can climb out of the crib, in line with AAP guidance ⁴.

18 Month Old Sleep Schedule FAQ

A Grounding Takeaway

Eighteen month old sleep is mostly a story of a solid schedule meeting a big developmental push. The one-nap day, the long wake windows, and the 7 to 8 p.m. bedtime are your frame, and they still work. The regression is loud, but it is temporary. Hold the nap window, keep bedtime predictable, meet the separation feelings and the molar pain and the nightmares with warmth, and keep your limits steady and kind. It passes, and your toddler comes out the other side more capable than before.

Next up: the 17 month old sleep schedule and 19 month old sleep schedule, or zoom out with the full baby sleep schedule by age guide.