Most babies do best with a bedtime between 6:00 and 8:00 PM, depending on their age and nap schedule. That window isn’t arbitrary. It aligns with when infant melatonin levels naturally peak, which for young babies happens between 6:00 and 8:00 PM. Putting your baby down during this biological window makes falling asleep easier and often leads to longer, more consolidated overnight sleep.
The exact right time shifts as your baby grows, though, and it depends on more than just the clock.
Bedtime by Age
Newborns don’t have a set bedtime. In the first few weeks, babies can’t tell the difference between day and night because their internal clock hasn’t developed yet. They sleep in short bursts of two to four hours around the clock, and trying to impose a fixed bedtime at this stage won’t accomplish much. Instead, you’re following their lead.
Around 3 to 4 months, a circadian rhythm starts to emerge. This is when you can begin shaping a more consistent bedtime, typically somewhere between 7:00 and 8:00 PM. Some babies at this age are already sleeping longer stretches at night, which makes an earlier, predictable bedtime more realistic.
By 6 months, most babies are capable of sleeping five to six hours at a stretch without feeding. This is the age when a firm bedtime between 6:00 and 7:30 PM works well for many families. Babies at this stage are usually on two or three naps during the day, and their last nap ends early enough in the afternoon to build sufficient sleep pressure for an early evening bedtime.
Between 9 and 12 months, as babies transition from three naps to two (and eventually one), bedtime may need to shift slightly earlier on days when a nap gets dropped or cut short. A bedtime of 6:00 to 7:00 PM is common during this stretch, especially on low-nap days when your baby is more tired than usual.
Why Earlier Bedtimes Often Work Better
It seems counterintuitive, but putting a baby to bed earlier frequently leads to better sleep, not worse. When babies stay up past their natural sleep window, their bodies release stress hormones to compensate for the fatigue. That “second wind” you sometimes see, where a tired baby suddenly gets wired and hyper, is a sign they’ve crossed from tired into overtired. Overtired babies have a harder time falling asleep, wake more frequently overnight, and often wake earlier in the morning.
An earlier bedtime works with your baby’s biology rather than against it. If your baby is consistently fighting sleep at 8:00 PM, the solution is often to move bedtime to 7:00 or even 6:30 PM rather than pushing it later.
How to Find Your Baby’s Ideal Bedtime
The best bedtime for your specific baby depends on when they last napped and the sleepy cues they’re showing you. Rather than picking a time from a chart and sticking to it rigidly, pay attention to your baby’s signals in the early evening. Common signs that your baby is ready for sleep include yawning, droopy eyelids, staring into the distance, rubbing their eyes, and pulling on their ears. Some babies get fussy and clingy, or they turn away from stimulation like toys, sounds, or lights. Occasionally, a baby will seem hungry but refuse to eat, which can actually be a sign of tiredness rather than hunger.
The goal is to start your bedtime routine when you notice those early cues, not after your baby is already crying and arching their back. Those later signs mean you’ve missed the ideal window and your baby is now overtired, which makes the whole process harder.
If your baby is currently falling asleep very late, say 9:00 or 10:00 PM, jumping straight to a 7:00 PM bedtime rarely works. A technique called bedtime fading is more effective: start by putting your baby to bed at the time they’re naturally falling asleep now, then gradually shift it 15 minutes earlier every few nights. This helps your baby learn to associate being in bed with actually feeling sleepy, rather than lying awake.
Building a Bedtime Routine
A consistent pre-sleep routine signals to your baby’s brain that sleep is coming. It doesn’t need to be elaborate. About 20 minutes before your target bedtime, start winding things down. A typical routine might include a warm bath, putting on pajamas, dimming the lights, reading a short book or singing a quiet song, then a cuddle and kiss goodnight.
What matters most is consistency. Doing the same sequence of calming activities in the same order each night creates a predictable pattern your baby learns to associate with sleep. Keep the environment low-stimulation: dim lighting, quiet voices, no screens. The routine itself becomes a cue that helps your baby transition from awake mode to sleep mode, which is especially useful during those early months when their internal clock is still developing.
When Bedtime Needs to Flex
Your baby’s ideal bedtime isn’t permanently fixed. It shifts with nap transitions, growth spurts, illness, travel, and developmental leaps. A baby who normally goes down easily at 7:00 PM might need a 6:15 PM bedtime during the week they drop from three naps to two, simply because they’re accumulating more fatigue by evening.
The last nap of the day has the biggest influence on bedtime. If your baby’s final nap ends at 3:00 PM, a 7:00 PM bedtime gives them about four hours of awake time before bed, which is appropriate for a baby over 6 months. If that last nap ends at 4:30 PM, bedtime may need to slide to 7:30 or 8:00 PM. The key number to watch is how long your baby has been awake since their last nap. For babies 6 to 12 months old, that final wake window before bedtime is typically two and a half to four hours, depending on age.
On days when naps go poorly or get skipped entirely, move bedtime earlier rather than later. A temporary 6:00 PM bedtime on a rough nap day prevents the overtired spiral and usually doesn’t cause problems the next morning.