Wake Window

4-Month-Old Wake Windows

Most 4-month-olds stay awake about 1 hr 15 min – 2 hr between sleeps. It’s the range the Wake Window app uses for babies aged 3–4 months.

When is your 4-month-old’s next nap?

Baby’s age

4 months

Next nap window

Getting the time…

Your next nap window will appear in a moment.

At 4 months

Four-month-olds share the 1 hr 15 min – 2 hr range with 3-month-olds, but they're at the older end of it, and many are comfortable closer to the two-hour mark.

Lots of parents notice sleep changing around this age, often called the 4-month sleep regression. Wake windows won't change that on their own, but keeping an eye on awake time can help you spot when your baby may be getting overtired.

Where 4 months fits

Suggested wake windows from newborn to 12 months. The highlighted row is this page.

  1. Newborn30–60 min
  2. 1 month60–90 min
  3. 2 months60–90 min
  4. 3 months1 hr 15 min – 2 hr
  5. 4 months1 hr 15 min – 2 hr
  6. 5 months2 hr – 2 hr 45 min
  7. 6 months2 hr – 2 hr 45 min
  8. 7 months2 hr 30 min – 3 hr 30 min
  9. 8 months2 hr 30 min – 3 hr 30 min
  10. 9 months2 hr 30 min – 3 hr 30 min
  11. 10 months3 hr – 4 hr
  12. 11 months3 hr – 4 hr
  13. 12 months3 hr – 4 hr

An example morning

  1. 7:00 AMWakes up for the day
  2. 8:15–9:00 AMFirst nap window: 1 hr 15 min to 2 hr after waking
  3. 8:40 AMFalls asleep
  4. 9:40 AMWakes after a 1 hr nap. The clock starts again
  5. 10:55–11:40 AMNext nap window
An example for a 4-month-old, assuming a 1 hr nap that starts mid-window. Real naps vary, and each new window counts from when your baby actually wakes.

Signs your baby may be tired

  • Yawning
  • Rubbing eyes or pulling at ears
  • Staring off or losing interest in toys and faces
  • Turning away or burying their face in your chest
  • Getting quieter, or fussier
All the signs of a tired baby

Signs the wake window may be too long

  • Crying that's hard to soothe
  • Arching the back or fighting being held
  • Taking much longer than usual to fall asleep
  • A short nap after a long stretch awake
Signs of an overtired baby

Common questions

Can wake windows help with the 4-month sleep regression?

They can't stop it, but offering naps before your baby is overtired can make a rough patch a bit easier. If sleep changes worry you, talk to your pediatrician.

When does the range change again?

At 5 months, Wake Window's suggested range moves to 2 hr – 2 hr 45 min.

Wake WindowNext nap on your Lock Screen

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