Children and Hot Sleeping — Parent Questions

Children have a higher surface-area-to-body-mass ratio than adults, which means they generate and radiate more heat relative to their size. They also have less developed thermoregulation — their systems are less efficient at adjusting to temperature changes during sleep. This is normal and typically improves with age.

The AAP recommends 68–72°F for infants. Overheating is a known risk factor for SIDS, so err on the cooler side. Dress babies in one layer more than an adult would wear comfortably in the same room — not more. Check for overheating by feeling the back of the neck or chest (not hands and feet, which are often cooler regardless).

Yes — children instinctively kick off covers when they’re too warm. This is healthy self-regulation. Use a one-piece sleep sack or footed pajamas instead of loose blankets, especially for children under 2. For older children, lightweight cotton pajamas and a light blanket give them something to kick off without creating a cold risk.

100% cotton or bamboo, loose-fitting, lightweight. Avoid polyester or fleece — they trap heat. Short sleeves and shorts are fine year-round for hot-sleeping children. Look for fabrics labeled OEKO-TEX certified to avoid chemical residues on sensitive skin.

Occasional night sweats in children are normal, especially during growth spurts and illness. See a pediatrician if: sweating is drenching and occurs most nights, is accompanied by fever, weight loss, swollen glands, or unusual fatigue, or if it started suddenly without an obvious cause. Childhood sleep apnea is an underdiagnosed cause worth raising with your pediatrician.

Co-sleeping adds significant body heat. If bed-sharing for safety or parenting reasons, maximize airflow: keep room temperature at 65–67°F, use percale cotton sheets, and keep a light fan running. The Scandinavian separate duvet method works for co-sleeping too — give the child their own light blanket separate from yours.