Another 3 am wake-up, and you are wondering if it will ever end. Night waking is one of the hardest parts of the first year, but in most cases it is completely normal. Understanding why babies wake up at night helps you respond calmly and spot the causes you can actually change.
Quick answer: why babies wake up at night
- Hunger: small stomachs need night feeds, especially under 6 months.
- Sleep cycles: babies wake briefly between cycles every 45 to 60 minutes and may need help resettling.
- Development: new skills, regressions and separation anxiety disturb sleep for a while.
- Discomfort: teething, illness, a wet nappy or a room that is too warm or cold.
What is normal at each age
- 0 to 3 months: waking every 2 to 3 hours to feed is expected.
- 3 to 6 months: many babies sleep a longer stretch, but 1 to 3 wakings are common.
- 6 to 12 months: some babies still wake once or twice; others sleep through. Both are normal.
Common causes and what helps
- Hunger: offer full feeds during the day, and keep night feeds calm and dim. See the baby feeding schedule.
- Sleep associations: if your baby always falls asleep feeding or being rocked, they may need the same help at every waking. Try putting them down drowsy.
- Regressions: around 4, 8 and 12 months, sleep often wobbles for a few weeks. See sleep regressions.
- Teething: a few unsettled nights around each tooth. See teething symptoms.
- Environment: check temperature, light and noise. See the best sleep environment.
- Overtiredness: too little daytime sleep can lead to more night waking. See how many naps a baby needs.
How to respond at night
- Pause for a moment. Babies make noises in light sleep and may settle on their own.
- Keep it boring: low light, quiet voice, no play.
- Feed if your baby is hungry, especially young babies.
- Change the nappy only if needed.
- Offer gentle comfort in the cot first: patting, shushing or a hand on the chest.
When to talk to your doctor
- night waking with fever, ear pulling, vomiting or breathing difficulty
- loud snoring, gasping or pauses in breathing
- poor weight gain or feeding problems
- you are exhausted and struggling to cope
Frequently asked questions
When do babies sleep through the night?
Many babies sleep a 6-hour stretch between 3 and 6 months, but waking up to 12 months and beyond is still normal.
Will starting solids help my baby sleep?
Not usually. Research does not show that early solids improve sleep. Start solids around 6 months when your baby is ready.
Should I night wean?
Talk to your doctor or health visitor first, especially for babies under 6 months or those with weight concerns.
Sources
- NHS: Helping your baby to sleep
- American Academy of Pediatrics, HealthyChildren.org: Getting Your Baby to Sleep
- Mindell J.A. et al., Sleep Medicine: Sleep patterns in infants
This guide is general information, not medical advice. If you are worried about your baby’s sleep, talk to your doctor or health visitor.