The witching hour: why your newborn cries at 5 PM

You held your baby all day. They ate, slept, had clean diapers. The sun goes down. And somewhere between 5 PM and 8 PM, a switch flips. They are inconsolable, red-faced, fists clenched. Nothing works. You wonder if you broke them.

You did not. This is the witching hour, and almost every newborn does it.

What "the witching hour" actually is

Pediatricians call it the "evening fussy period" or, more clinically, the "period of PURPLE crying" — a term developed by Dr. Ronald Barr to describe the normal crying curve of healthy infants. PURPLE stands for: Peak around 2 months, Unexpected, Resists soothing, Pain-like face, Long-lasting (often 30–40 minutes at a stretch), and Evening.

The pattern is so consistent across cultures and feeding methods that researchers consider it a normal developmental phase rather than a symptom of anything wrong. Crying time follows a predictable curve: it climbs from about 2 weeks of age, peaks around 6–8 weeks at roughly 2–3 hours total per day, and tapers off by 3–4 months.

The "evening" part of the pattern is the one most parents notice. By dinnertime your baby has absorbed a full day of light, sound, faces, and stimulation. Their nervous system is still learning how to filter all of it. Add an overdue nap or a long wake window and you get the crying you cannot soothe away.

Why it happens (the four most likely causes)

1. Overstimulation accumulated through the day

A newborn's brain processes input it cannot yet filter. By evening, the running total of light, voices, touch, and movement has built up. Crying is how an immature nervous system discharges that load. Think of it as a system reset.

2. The last wake window ran too long

Newborns can usually only stay awake for 45–60 minutes before they need to sleep again. Miss that window and you get a baby who is overtired but cannot fall asleep — which presents almost identically to "fussy for no reason." This is the single most fixable cause of a witching-hour meltdown.

3. Digestive maturation

The gut is still learning to handle milk volume. Gas, reflux, and bowel movements all increase in the evening for many newborns. Some babies are pulling their knees up and clenching fists because their belly hurts, not because they are tired.

4. Cluster feeding tied to a growth spurt

From roughly 5 PM to 9 PM, many breastfed babies want to feed almost continuously. This is normal cluster feeding — it tells your body to make more milk to match a growth spurt. The crying between feeds is the baby waiting for the next round, not hunger you missed.

What actually works in the moment

The 5 S's, developed by Dr. Harvey Karp, replicate the sensory environment of the womb. Used in order, they work for the majority of newborns inside 60 seconds.

Swaddle

Snug arms, looser hips. A swaddled baby cannot startle themselves awake mid-cry. Use a fitted swaddle, not a loose blanket. Stop swaddling the second your baby shows signs of rolling — usually 8–12 weeks.

Side or stomach hold

For soothing only, while you are holding them. Babies should always be placed on their backs to sleep. But held on their side in your arms, with their belly resting against your forearm, gas pressure shifts and many babies calm immediately.

Shush

Loud white noise, right next to the baby's ear. As loud as a vacuum cleaner. The womb was deafening — roughly 75 decibels of blood flow. Quiet rooms do not soothe newborns; they overstimulate them. A white noise machine kept 12 inches from baby's head, on a setting that masks ambient sound, is enough.

Swing

Small, fast, rhythmic motion. Not a slow rocking-chair sway. Hold baby securely and bounce on a yoga ball, walk briskly, or use a sling and pace. Movement turns down the cry response.

Suck

A pacifier, a clean finger (pad side up), or the breast. Sucking is wired to calm — it releases cholecystokinin, which is itself a sedating neurotransmitter. Pacifiers are linked to lower SIDS risk and do not interfere with breastfeeding once nursing is established.

Things that do not help (despite advice you will get)

• Driving around the neighborhood. Works for some babies, but car-seat sleep is not safe sleep — the chin can drop and restrict airways. If you do drive, transfer baby to a flat surface as soon as you are home.
• Gripe water and gas drops. No randomized trial has shown either to reduce infant crying. Most pediatricians are neutral on safety but skeptical on efficacy.
• Cutting dairy from a breastfeeding diet. Useful in the small minority of babies with confirmed cow's milk protein intolerance. Not useful for plain witching-hour crying. Talk to a pediatrician before any major elimination.
• "Cry it out." Not appropriate for newborns. Sleep training under 4 months is not recommended by the AAP.

When witching hour is actually colic

Pediatricians use the "rule of threes" to distinguish typical evening fussiness from colic: crying that lasts more than 3 hours a day, more than 3 days a week, for more than 3 weeks, in an otherwise healthy and well-fed baby. About 1 in 5 newborns meets that threshold. Colic still resolves by 3–4 months and is not associated with any long-term harm — but the load on parents is real, and a pediatrician can rule out the small number of medical causes (reflux, dairy allergy, an undiagnosed infection) that mimic it.

If you are at the end of your rope: put the baby down in a safe spot — crib, bassinet, on their back — leave the room, set a timer for 10 minutes, and breathe. A crying baby in a safe spot is fine for ten minutes. A shaken baby is not. Every parent has reached this point. Calling someone — a partner, a friend, a sibling — to take over for an hour is not failing.

Based on AAP infant crying guidance and the Period of PURPLE Crying framework. If your baby's crying changes suddenly, is accompanied by fever, vomiting, or unusual lethargy, or if you are worried — call your pediatrician.