The Short Answer
Newborns (0–3 months) need 14–17 hours of total sleep per day, according to the National Sleep Foundation and guidelines aligned with AAP recommendations. This sleep is distributed across multiple short stretches of 2–4 hours throughout the day and night.
Sleep Needs by Age
Sleep requirements change rapidly in the first year:
| Age | Total sleep per day | Typical stretch length |
|---|---|---|
| 0–1 month | 14–17 hours | 1–3 hours |
| 1–3 months | 14–17 hours | 2–4 hours |
| 3–6 months | 12–16 hours | 4–6 hours |
| 6–12 months | 12–15 hours | 6–10 hours overnight |
Why Newborns Sleep So Much
Newborns sleep in frequent short cycles because:
- Brain development: The first weeks involve explosive neurological growth; sleep is the primary driver of neural consolidation
- Tiny stomachs: A newborn's stomach holds only 5–7 ml at birth, requiring feeds every 2–3 hours around the clock
- Sleep architecture: Newborns spend up to 50% of sleep in active (REM-like) sleep vs. 20–25% in adults, making them easier to rouse
- No circadian rhythm yet: The internal clock isn't calibrated until around 6–12 weeks, so day/night distinction is absent at first
Warning Signs: Too Much or Too Little Sleep
Consult your doctor if your newborn:
- Sleeps more than 18–19 hours consistently and is difficult to wake for feeds
- Seems lethargic, jaundiced, or is not gaining weight
- Sleeps fewer than 11 hours total and seems excessively fussy or irritable
- Has any periods of stopped breathing or colour changes during sleep
How to Support Healthy Newborn Sleep
- Follow hunger cues — do not skip night feeds in the first 6–8 weeks
- Expose baby to daylight during wake windows to help calibrate the circadian clock
- Safe sleep environment: Always place baby on their back on a firm, flat surface with no soft bedding (AAP Safe Sleep guidelines)
- Swaddling can extend sleep stretches in the first 6–8 weeks, but stop when baby shows signs of rolling
- White noise mimics womb sounds and can help babies stay in lighter sleep stages
The "Newborn Phase" Is Temporary
The NHS reassures new parents that broken sleep in the newborn period is entirely normal and expected. Most babies naturally begin consolidating sleep into longer stretches between 6–12 weeks as their circadian rhythm develops.
Helsedirektoratet emphasises that feeding on demand, even through the night, is the recommended approach in the first months and should not be restricted in favour of sleep training.
Track Your Baby's Sleep
Use our Baby Sleep Tracker to log sleep and wake windows, spot patterns, and understand what's normal for your specific baby's age.
Related Articles
- When Should a Baby Sleep Through the Night?
- What Is a Wake Window?
- How to Help Your Baby Sleep Longer
Sources
- American Academy of Pediatrics (AAP) — How Much Sleep Do Children Need?
- National Sleep Foundation — Newborn Sleep
- NHS — Sleep and your baby
- World Health Organization (WHO) — Caring for newborns