A one-month-old baby typically sleeps 16–18 hours per day, spread across multiple short periods throughout the day and night. At this age, newborns don't yet follow a 24-hour sleep schedule and instead sleep and wake based on hunger, discomfort, and their natural circadian rhythms, which are still developing.
During the first month, expect your baby to sleep in short bursts of 2–4 hours, waking frequently to feed—typically every 2–3 hours. Newborns don't distinguish between day and night, so sleep happens around the clock with no predictable pattern. This is completely normal and necessary: frequent feeding supports growth and brain development, and your baby's tiny stomach can only hold small amounts at a time.
To support healthy sleep at one month old, create a calm sleep environment (dark, quiet, and cool), practice safe sleep by placing baby on their back in a crib or bassinet, and respond to hunger and comfort cues promptly. Swaddling can help some babies feel secure. Avoid the temptation to establish a strict schedule yet—at one month, responsive feeding and sleep are more important than routines.
Over the next few weeks and months, your baby will gradually begin consolidating sleep into longer periods, particularly at night, though newborn sleep remains unpredictable for several months. If you have concerns about your baby's sleep, feeding, or development, consult your pediatrician.