Kids Home > 8-Month-Old Baby (32 weeks)

An 8-month-old baby will more than likely be able to sleep through the night. Developmentally, a 32-week-old infant has the ability to sleep for 10 to 12 consecutive hours without a feeding. Also during this time in your baby's life, you may decide to start weaning your baby off of breast milk. However, make sure to wean your baby to formula rather than regular milk products.

You and Your 8-Month-Old Baby

Daily games of peek-a-boo are all the rage right now. With object permanence firmly under his belt, disappear/reappear games can be a ton of fun for you and your 8-month-old baby.
Physical movements are still a bit jerky and balance isn't quite there yet, but you can practically see them developing daily.

Major Developments for an 8-Month-Old Infant

As babies begin their eighth month of life, they will really start to "come into their own." While smooth movement is still a bit off, infants have made great strides in learning how to control their limbs and coordinate their movement.
Physically, they may be able to bang a couple of blocks together (like clapping), but it is not quite as easy for infants at this stage to stack blocks on a flat surface. That skill requires yet more fine motor abilities.
Eight-month-old infants are more likely engaging in large motor talents, such as rolling, doing the Rambo crawl, throwing things, kicking, and pulling socks off (always Mom's favorite). They may also begin to crawl. Watch out! Your whole life is about to change once again!
On average, an 8-month-old baby boy will weigh in at about 19½ pounds and the average baby girl will weigh about 17¾ pounds. Boys in the 50th percentile for height will top the charts at 27½ inches "tall." An 8-month-old average baby girl will measure up to 27 inches tall.
(Click Infant Developmental Milestones -- 6 to 9 Months to learn more about the progress of 8-month-old infants.)
Written by/reviewed by:
Last reviewed by: Arthur Schoenstadt, MD
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