Should my baby wear a hat to sleep?
Short answer: No. The NHS says remove hats and extra clothing as soon as you come indoors or get into a car, bus or train, even if it wakes your baby.
Here is the detail behind that answer, taken from current UK guidance from the NHS and the Lullaby Trust.
Things to check
- Choose the right size for your baby's weight so the neck and arm holes are snug and they cannot slip down inside.
- Pick a tog for your room temperature and adjust the clothing underneath.
- Avoid weighted sleeping bags, and do not use a hood or extra blankets on top.
What the guidance says
- Check your baby's temperature by feeling their chest or the back of their neck. Cool hands and feet are normal.
- Keep the room between about 16C and 20C and check it with a room thermometer.
Related questions
What is a baby sleeping bag?
A wearable bag that replaces loose blankets, so your baby cannot wriggle under covers.
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More advice
Can an 8 month old sleep with a blanket?How do I know if my baby is too hot at night?Can I swaddle a 5 month old?Can a 5 month old sleep with a blanket?Is a baby sleeping bag right for you? Quick quizGuide to cot bedding sets: what to look forAll baby bedding and sleeping bags advice →
Sources
- NHS: Sudden infant death syndrome (SIDS) (accessed 2026-10-21)
General information only, not medical advice. Always follow your product's instructions. If you are worried about your baby, contact your GP, health visitor or 111. In an emergency, call 999.