5-Month-Old Baby Development
Summary
Average weight
6.9 kg
Average height
64 cm
Daily sleep
12-15 hours
Feeding interval
3.5-4 hours
Skills Gained This Month
Rolling is mastered: back to front and front to back. They can sit with support. They pass objects from one hand to the other and explore everything by mouthing it. They start responding to their name and can tell a stranger from a familiar face.
Feeding
5-6 feeds a day, every 3.5-4 hours. This is still a breast-milk-or-formula-only period. Frequent waking and constant demand to feed this month usually signals a developmental leap rather than a need for solids.
Sleep
Night sleep extends to 9-11 hours, with three naps typical during the day. A baby who has just learned to roll may practise it in the cot at night, which is a temporary cause of broken sleep. Make sure the cot is safe: no pillows, toys or bumpers.
When To Call The Doctor
Not rolling in any direction at five months
Unable to hold a sitting position even with support
No response to sound or to their name
Frequently Asked Questions
How often should a 5-month-old baby feed?
A 5-month-old usually feeds every 3.5-4 hours. 5-6 feeds a day, every 3.5-4 hours. This is still a breast-milk-or-formula-only period. Frequent waking and constant demand to feed this month usually signals a developmental leap rather than a need for solids.
How many hours a day does a 5-month-old sleep?
Total sleep at 5 months is usually 12-15 hours. Night sleep extends to 9-11 hours, with three naps typical during the day. A baby who has just learned to roll may practise it in the cot at night, which is a temporary cause of broken sleep. Make sure the cot is safe: no pillows, toys or bumpers.
How much should a 5-month-old weigh?
The average weight at 5 months is around 6.9 kg, with a height of about 64 cm. These are medians; clear differences between babies are normal. What matters is steady progress along the percentile curve rather than any single measurement.
What can a 5-month-old baby do?
Rolling is mastered: back to front and front to back. They can sit with support. They pass objects from one hand to the other and explore everything by mouthing it. They start responding to their name and can tell a stranger from a familiar face.
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When To Seek Care Immediately
Whatever your baby's age, seek medical care without waiting for: a fever of 38 °C or above in a baby under 3 months, a persistent fever above 39 °C at any age, laboured or rapid noisy breathing, blue lips or face, difficulty waking or marked lethargy, inconsolable persistent crying, complete refusal to feed, repeated projectile vomiting, bloody stools, fewer than 6 wet nappies a day, seizure-like movements, or the loss of a skill already gained. In these situations reach real medical care rather than an app or a web search.
This content is for informational purposes only and does not replace medical advice. Always consult your doctor or midwife about your own or your baby's health.