A night light's job during a night feed or nappy change is to provide just enough light to see safely without fully waking a baby back up — get the brightness or colour wrong and it can undo exactly what it's meant to help with.

Step 1. Warm, Dim Light Disrupts Sleep Less Than Bright White or Blue Light

Light in the blue spectrum (and bright white light generally) suppresses melatonin production more than warm amber or red-toned light, which matters specifically at night when the goal is minimal disruption to a baby's (and parent's) ability to fall back asleep after a feed or change. Many dedicated nursery night lights, like the Tommee Tippee Gro Egg 2, are designed around warm, dimmable amber tones specifically for this reason.

Checking a night light's actual colour temperature, not just that it's "dim," matters more than brightness level alone — a warm, low light does the job with far less sleep disruption than a bright or cool-toned one, even at a similarly low setting.

Step 2. A Room Thermometer Built Into the Light Solves a Genuinely Separate Problem

Some night lights, like the Tommee Tippee Gro Egg 2 or Shnuggle Moonlight Plus, combine a light with a digital room temperature display, which matters because room temperature directly affects the tog rating a baby should be sleeping in (see our sleeping bag guide). This is a genuinely useful combination rather than an unrelated bundled feature, since checking both at once during a night visit is more practical than two separate devices.

Worth prioritising specifically if you don't already have a separate reliable room thermometer — for a nursery that already has one, a plain light without this feature works just as well.

Step 3. Projector and Sound Features Can Help Settling, But Aren't Universal

Some night lights, like the Cloud B Cloudbox or Liewood Manuel Rabbit, add star projections, white noise or lullabies specifically as a settling aid alongside the light itself. This genuinely helps some babies fall asleep more easily, but isn't universally effective, and a baby who's more stimulated than soothed by moving projections or sound may do better with a plain, still light instead.

Worth trying if settling difficulty is a genuine issue, without assuming every baby will respond the same way — a simple, static night light remains the safer default choice if you're unsure which your baby will prefer.

Step 4. Rechargeable and Battery-Powered Designs Solve a Real Placement Problem

A cordless, rechargeable or battery-powered night light, like the Jane Yum Bear or Liewood's Yuki range, can be placed anywhere in the room rather than needing to sit near a plug socket — genuinely useful in nurseries where furniture layout doesn't put a cot near an outlet. A plug-in design is generally more reliable for constant overnight use without needing to check battery levels.

Worth choosing based on actual room layout rather than assuming one power type is always better — a plug-in light suits a cot near a socket; a rechargeable one suits more flexible placement.

Step 5. Dimmer Control Matters More Than Maximum Brightness

The ability to dim a night light right down to a very low, just-enough-to-see level matters more in practice than how bright it can go at full setting, since the whole point of a night visit is minimal light. Fixed-brightness lights without a dimmer offer less control over exactly this.

Checking for a genuine low-end dimming range, not just an on/off toggle, is worth prioritising over headline brightness specs that rarely matter for actual night-time use.

Step 6. Placement Away From the Cot Matters for a Genuine Safety Reason

A night light (and any cables, if not battery-powered) should sit well away from the cot itself, out of a baby's reach, following the same general safety logic as keeping any cords and small parts away from where a baby sleeps. This is a placement consideration rather than a product spec, but it's worth planning before fixing a light's position in the room.

Worth deciding on placement at the same time as buying the light, rather than as an afterthought once it's already mounted or plugged in near the cot.

Quick Picks by Budget

Budget: Jane Yum Bear — £6.95, rechargeable, colour-changing.

Mid-range: Shnuggle Moonlight Plus — £29.95, light plus digital room thermometer.

Settling aid: Cloud B Cloudbox — £59.95, projector plus sound/story.

FAQ

What colour night light is best for a nursery?
Warm, dim amber or red-toned light disrupts sleep less than bright white or blue light, since blue-spectrum light suppresses melatonin more. Check a light's actual colour temperature, not just its brightness setting. See Step 1.

Is a combined light and room thermometer worth it?
Yes, if you don't already have a separate room thermometer — room temperature affects what tog sleeping bag a baby should be in, so checking both at once during a night visit is genuinely practical. See Step 2.

Do projector or sound features actually help babies sleep?
For some babies, yes, as a settling aid — but not universally, and a baby who's more stimulated than soothed by movement or sound may do better with a plain, static light. See Step 3.

Where should a night light be positioned?
Away from the cot and out of a baby's reach, following the same safety logic as keeping cords and small parts clear of where a baby sleeps. Worth deciding at the same time as buying, not as an afterthought. See Step 6.