15 Month Old Wake Windows & Sleep Schedule
Most 15 month olds take 1 nap a day and stay awake for 4½ to 5½ hours on either side of it. The nap usually falls around midday and lasts 1½ to 2½ hours, with bedtime between 6:30 and 8 pm.
- Wake window
- 4½–5½ hours
- Naps
- 1 a day
- Day sleep
- 2–2.5 h
- Night sleep
- 11–12 h
- Total in 24 h
- 11–14 h
Reviewed by Pediatric sleep consultant (TBC) · Updated 2026-09-25
Next nap for your 15 month old
Next nap
11:30 am
after 4 h 30 min awake · typical 4½–5½ hours
See the whole day
- 7:00 am Morning wake-up
- 11:30 am Nap 1 · until 1:30 pm
- 7:00 pm Bedtime
Get a reminder before 11:30 am. The Wake Windows app pings you when the window is closing and re-plans the day when naps run short.
Sample schedules
15 month old sleep schedule
These schedules use 1 nap and wake windows that lengthen from 4 h 30 min in the morning to 5 h 30 min before bed. Pick the one closest to your baby's wake-up time and shift it by the difference.
Up at 6:00 am
- 6:00 am Morning wake-up
- 10:30 am Nap 1 · until 12:30 pm
- 6:00 pm Bedtime
Up at 7:00 am
- 7:00 am Morning wake-up
- 11:30 am Nap 1 · until 1:30 pm
- 7:00 pm Bedtime
Up at 8:00 am
- 8:00 am Morning wake-up
- 12:30 pm Nap 1 · until 2:30 pm
- 8:00 pm Bedtime
How 15 month old wake windows change through the day
The first wake window of the day is the shortest. Each one after a nap gets a little longer, with the longest just before bedtime:
| Window | Length |
|---|---|
| First window (after morning wake-up) | 4 h 30 min |
| Last window (before bedtime) | 5 h 30 min |
What's changing for your 15 month old
- One midday nap is the norm for most toddlers.
- Short naps are common while the new 1-nap rhythm settles.
- Toddlers test limits at bedtime; a predictable routine helps.
- Night sleep of 11–12 hours is typical.
What comes next
By 18 months wake windows lengthen to 5–6 hours. Many toddlers also go through an 18-month sleep regression.
Wake windows around 15 months
Guides for 15 months
Questions about 15 month old wake windows
How long should a 15 month old be awake?
About 4½ to 5½ hours before and after their single nap.
How many naps does a 15 month old need?
Most need 1 nap a day. A few still need 2 on some days.
What time should a 15 month old nap?
Usually around midday, roughly 4½–5 hours after waking.
What time should a 15 month old go to bed?
Between 6:30 and 8 pm.