My Baby's Growth

Fetal development - month 8

Third trimester

At the end of 8 months:

  • Baby is 16-1/2 to 18 inches long.
  • Weight is about 4 to 6 pounds.
  • Overall growth is rapid this month.
  • Tremendous brain growth occurs at this time.
  • Most body organs are now developed, except for the lungs.
  • Movements or “kicks” are strong enough to be visible from the outside.
  • Kidneys are mature.
  • Skin is less wrinkled.
  • Fingernails now extend beyond fingertips.