How to read milestones at 8 months

The CDC publishes milestone checklists at 6 and 9 months but not at 8, so 8 months sits between two guideposts. Its checklists list skills that most children (about 75%) can do by that age, which is why they are a sensible "check in" point rather than a pass-fail test. The WHO Multicentre Growth Reference Study adds the ranges: in healthy, breastfed children, sitting without support was achieved between about 3.8 and 9.2 months, standing with assistance between 4.8 and 11.4 months, and hands-and-knees crawling between 5.2 and 13.5 months.

Typical skills around 8 months

  • Motor: Sitting without support, getting into sitting from lying, rolling both ways, and for many babies crawling, belly-scooting or bottom-shuffling. Some pull up on furniture. All crawling styles count.
  • Hands: Passing a toy from one hand to the other, banging two objects together and raking food toward themselves; the thumb-and-finger "pincer" grasp often shows up between 8 and 12 months.
  • Language: Strings of repeated sounds such as "mamama" and "bababa", and listening when you speak. The CDC 9-month list includes making different sounds like these.
  • Social: Wariness of strangers, clinging to familiar adults and protesting when you leave. See our separation anxiety guide.
  • Thinking: Looking for a toy that drops out of sight and enjoying peekaboo.

Sleep at 8 months

The AASM consensus, endorsed by the AAP, recommends 12–16 hours of sleep per 24 hours (including naps) for babies 4–12 months. Most 8-month-olds take two or three naps. Our wake window calculator lists about 150–210 minutes at 7–10 months. Sleep often gets bumpy around now: read our 8-month sleep regression guide and the 6–12 month sleep schedule hub.

Free tool: wake window calculator →

Feeding at 8 months

Milk (breast milk or formula) is still the main source of nutrition while solids grow. Offer a variety of textures and iron-rich foods and follow your pediatrician's advice on allergens. See our introducing solid foods guide and baby-led weaning guide.

Log milestones with dates • Offline first • Free core

Download free →

How to support your 8-month-old

1

Give lots of floor time

Safe space on the floor, rather than in seats and containers, lets your baby practice sitting, reaching, rolling and crawling.

2

Baby-proof now

Babies this age can move fast. Gate stairs, secure furniture to walls, cover outlets and keep small objects out of reach.

3

Play back-and-forth games

Peekaboo, pat-a-cake and sound imitation build social and language skills.

4

Talk about what you are doing

Name objects and actions; read board books together.

5

Offer finger foods safely

Soft, pea-sized or dissolvable foods under supervision, sitting upright. Follow CDC guidance on choking hazards.

6

Write milestones down

Dates of first sit, first crawl and first babble make well-child visits easier.

When to talk to your pediatrician

Milestone timing varies widely between healthy children, and one missed item is rarely a diagnosis. Bring your notes to the well-child visit and ask early if you see any of the following, or simply feel something is off:

  • does not bear weight on the legs when held upright, or does not sit even with support
  • does not babble or make different sounds, or does not respond to their name or to sounds
  • does not look for a toy you hide or show interest in people and games like peekaboo
  • does not move toys from one hand to the other or reach for things
  • loses a skill they previously had

Early evaluation is not an overreaction: the CDC's "Learn the Signs. Act Early." program exists so concerns are raised sooner rather than later, and your pediatrician can refer for a developmental screening if needed.

Sources

Disclaimer: This article is for general guidance and does not replace advice from your pediatrician. Timelines are ranges that vary between healthy children. If you are worried about your baby's sleep or development, consult your doctor.