Ocean Sounds for Babies: Safe Volumes and AAP Guidance
Last updated April 2026
Note: This page covers safe use of ambient ocean sounds for infant sleep. It is not a substitute for advice from your paediatrician. Always follow your healthcare provider's guidance on infant sleep safety (AAP Safe Sleep guidelines) as the primary reference.
TL;DR: 50 dB maximum, 7 feet (2 metres) minimum distance from the crib. Use Night Tide preset only (no gulls, no storm). 60-minute sleep timer. Check volume with a free dB app. Ask your paediatrician if uncertain.
The AAP Guidance on Sound Machines
In 2014, the American Academy of Pediatrics published research (Pediatrics, 2014, Milette et al.) testing three infant sound machines in a standard nursery setting. All three exceeded 50 dB when placed at crib-side. One reached 92 dB. The AAP subsequently issued guidance that infant sound machines (and by extension, any ambient sound source) should be played at 50 dB or less and positioned at least 7 feet (approximately 2 metres) from the crib.
This guidance was updated and reinforced in subsequent safe-sleep communications. The concern is not that brief exposure to sound damages infant hearing, but that sustained overnight exposure above safe thresholds over weeks and months may affect hearing development. Infants spend far more time sleeping than adults, meaning their cumulative sound exposure is higher if a sound machine runs all night.
Ocean sounds through a smartphone or small speaker obey the same physics as any sound machine. The 50 dB / 7 feet rule applies to ocean sounds exactly as it does to white noise or nature sound machines.
How to Check the Volume
A free dB meter app on a smartphone is sufficient for this purpose. Search for "decibel meter" or "sound level meter" in the App Store or Google Play. Good options include NIOSH SLM (US National Institute for Occupational Safety and Health, free), Decibel X, or SPLnFFT.
To measure:
- Set up the ocean player at your intended volume.
- Position the phone at the same height as the baby's head in the crib.
- Open the dB meter app and wait 10 to 15 seconds for the reading to stabilise.
- If the reading exceeds 50 dB, reduce the master volume on the ocean player until the measurement drops below 50 dB.
- At 50 dB, the sound should be clearly audible in a quiet room but comparable to a quiet library or office.
Repeat this measurement if you move the device, change speakers, or change the volume. Smartphone dB meters are not calibrated instruments but provide a reasonable guide for this purpose.
Recommended Setup for Babies
Use the Night Tide preset only for infants. This preset has waves, tide lapping, and very low wind, and nothing else. No gulls, no distant storm, no shingle drag. The Night Tide sound is the calmest, most consistent profile with no sudden transient sounds that might startle a sleeping infant.
Device placement: a shelf, dresser, or bookcase positioned at least 7 feet from the crib. Placing the device on the floor reduces distance to the baby further when they are in a cot with mesh or slatted sides. A higher shelf placement provides more distance. Never place a phone or speaker inside the crib.
Enable the 60-minute sleep timer with the one-minute fade. The sound fades out gently, and most babies in deep sleep at that point do not notice the transition to silence. If your baby consistently stirs when the sound stops, extend the timer to 90 minutes.
Ocean Sounds vs White Noise for Babies
Both are appropriate at safe volumes. The practical differences:
- White noise provides more consistent masking per decibel because its flat spectrum covers more frequencies. If your baby is sensitive to specific environmental sounds (traffic, siblings, doorbell), white noise will mask a broader range.
- Ocean waves have a warmer frequency profile and the gentle rhythmic cycle, which some parents find helps babies settle in the pre-sleep phase. The rhythm can pace baby's breathing in the transition to sleep.
- Practical consideration: Some babies settle better with one or the other. Try both at safe volumes over a week and observe which produces faster settling and fewer night wakings.
Important Safety Boundaries
- No headphones on babies. Audio headphones, earbuds, or infant headphones placed on or in the ears of babies are not recommended for sleep. This is true regardless of the sound source.
- Do not place a speaker or phone directly against the crib mattress, bumper, or cot side. The goal is distance, not proximity.
- Do not run ocean sounds at high volume because you think the baby is hard to wake. High volume is not safer because a baby sleeps through it. The concern is cumulative exposure across many nights of sleep.
- Night Tide only for infants. The Atlantic Storm preset contains significant wind and distant storm sound that can be activating. The Tropical Lagoon and Cornish Coast presets include gulls and shingle, which are transient sounds. For infant use, Night Tide only.
From Babies to Toddlers and Beyond
Ocean sounds used safely in infancy can become part of a longer-term sleep routine. Children who associate the sound of gentle waves with bedtime and sleep often find the transition to falling asleep independently easier, because the external sound cue triggers the learned association. If you start with a 60-minute timer, keep that timer as the child grows. The goal is a sound that signals "it is time to sleep" rather than a sound that the child becomes dependent on all night.
As children grow (typically from around 2 years), you can gradually reduce the volume over several weeks, allowing the sleep association to shift from the external sound toward the child's own body signals. There is no set age or timeline for this: follow your child's lead and your paediatrician's guidance.
Night Tide for bedtime
Calmest preset, no sudden sounds, 60-min timer with fade. Free, no signup.
Open the playerFrequently Asked Questions
Are ocean sounds safe for newborns?
Ocean sounds at the correct volume and distance are generally considered safe for newborns. The American Academy of Pediatrics recommends that any sound machine be played at no more than 50 dB and positioned at least 7 feet (about 2 metres) from the crib. At this distance and volume, ocean sounds are comparable to a quiet conversation in the next room and do not pose a hearing risk. Always verify the volume with a free decibel meter app on your phone, placed near the baby's head.
Should I use a timer for my baby?
Yes. Running any continuous sound all night every night is not recommended by the AAP, which notes that the long-term effects of sustained overnight sound machine use are unclear. A 60-minute timer with the one-minute fade allows the sound to fade before the baby reaches deep sleep stages, after which the absence of the sound typically does not cause waking. If your baby consistently wakes when the timer expires and the sound stops, you can extend to 90 minutes.
Ocean sounds or white noise for babies?
Both are used by parents, and both are safe at appropriate volumes. White noise provides more consistent masking because its flat spectrum covers more frequency ranges without the rhythmic variation of ocean waves. Ocean sounds have a slightly warmer frequency character and the rhythmic wave cycle, which some parents find helps babies pace their breathing in the settling phase. For very young infants under 3 months, either is acceptable. There is no strong evidence that one is superior to the other for infant sleep.
What about the womb connection: is ocean sound related to what babies heard in utero?
This is a popular theory. Inside the womb, babies hear constant low-frequency sound from the mother's heartbeat, blood flow, and digestive system, overlaid with muffled external sounds. This creates a broadband, low-frequency sound environment somewhat similar to the low-end of ocean sound or brown noise. However, the specific womb soundscape varies between pregnancies, and the theory that ocean sounds are particularly effective because they mimic womb sounds is not strongly evidenced. Ocean sounds work for babies largely for the same reason they work for adults: consistent, non-sudden broadband sound reduces arousal and masks environmental noise.