An 8-month-old needs about 12 to 15 hours of total sleep per day, including nighttime sleep and naps. Most babies this age get 10 to 12 hours overnight and split the remaining sleep across two daytime naps. That’s a wide range, and where your baby falls depends on nap length, bedtime, and how smoothly sleep is going at this particular stage.
How That Sleep Breaks Down
At 8 months, most babies have transitioned from three naps to two. Those two naps typically add up to 2 to 3 hours of daytime sleep, with the rest happening overnight. A baby sleeping 11 hours at night and napping for 3 hours during the day hits 14 hours total, which is right in the middle of the recommended range.
Wake windows, the stretches of awake time between sleep periods, run about 2.5 to 3.5 hours at this age. They tend to get slightly longer as the day goes on. A common pattern looks like this: about 2.5 to 3 hours of awake time before the first nap, 3 hours between the end of that nap and the start of the second, and 3 to 3.5 hours between the last nap and bedtime.
What a Typical Day Looks Like
A sample schedule for an 8-month-old on two naps might look something like this:
- 6:45–7:00 a.m. Wake up and first feeding
- 9:30–11:15 a.m. First nap
- 2:15–4:00 p.m. Second nap
- 7:00–7:30 p.m. Last feeding and bedtime
This is a guideline, not a prescription. Some babies wake earlier and go to bed earlier. Some take shorter naps and compensate with a longer night. The key markers to watch are total sleep in the 12-to-15-hour range and wake windows that don’t stretch much past 3.5 hours, since overtired babies often have a harder time falling and staying asleep.
If your baby is still on three naps, watch for signs they’re ready to drop one: fighting the third nap, taking a long time to fall asleep at bedtime, or waking earlier in the morning. The transition can take a week or two of adjustment, during which bedtime might need to shift earlier temporarily.
Why Sleep Falls Apart Around 8 Months
Eight months is a busy developmental window. Many babies are learning to crawl, pull themselves up, and sit independently. These new physical skills can cause restlessness at night as babies practice movements even in their sleep. It’s common to find your baby standing in the crib at 2 a.m., unsure how to get back down.
Separation anxiety also tends to intensify around this age. If your baby cries or becomes upset the moment you step away from the crib, that’s a normal part of emotional development, not a sleep training failure. Babies are beginning to understand that you exist even when you’re out of sight, and that realization can make separations feel more stressful for them.
Teething adds another layer. Many 8-month-olds are cutting their first teeth, which can cause fussiness and more frequent nighttime waking. Greater environmental awareness also plays a role: babies this age are more tuned in to sounds, light, and activity around them, making it harder to wind down when there’s stimulation nearby. These disruptions are often grouped under the term “sleep regression,” but they’re really signs of normal, healthy development. They typically resolve within a few weeks.
Night Feedings at This Age
Whether your 8-month-old still needs to eat overnight depends partly on how they’re fed. Formula-fed babies over 6 months are unlikely to wake from genuine hunger, since formula digests slowly and most are getting plenty of calories during the day. Breastfed babies may still benefit from night feeds, and reducing them before 12 months can sometimes lower milk supply. If you’re breastfeeding and your baby is waking to eat, there’s no rush to change that unless you and your pediatrician decide it’s appropriate.
That said, many 8-month-olds who wake at night aren’t waking because they’re hungry. Habit, comfort-seeking, and the developmental changes described above are more common drivers. If your baby eats well during the day (both milk and solids by this age), nighttime waking is more likely about needing help getting back to sleep than about calories.
Setting Up the Sleep Environment
Room temperature makes a real difference in sleep quality. The recommended range for a baby’s room is 16 to 20°C (about 61 to 68°F). Babies who are too warm tend to sleep more restlessly and wake more often. A lightweight sleep sack is a good option at this age, since loose blankets are still not safe in the crib.
The basics of safe sleep still apply at 8 months: place your baby on their back for every sleep, use a firm and flat mattress in a safety-approved crib, and keep the sleep area free of blankets, pillows, bumper pads, and stuffed animals. Even though your baby can probably roll both ways by now, starting them on their back remains the safest practice. If they roll onto their stomach on their own during the night, that’s fine as long as the crib is clear of soft bedding.
Darkness and white noise can help with the increased environmental awareness that comes at this age. A baby who might have slept through household sounds at 4 months may now be easily roused by a door closing or a dog barking. A consistent, boring sleep environment works in your favor.