Baby Layering Guide
Tell us the temperature, what you are wearing and what your little one is doing for an outdoor layer list capped at one more layer than you.
One more layer than you, and no more
Several thin layers trap warm air and come off easily the moment a warm car, shop or home makes them too much. Start with a base layer, add a warm middle layer, finish with a windproof outer layer, mittens and a hat for outdoors. The total stays at one more layer than the adult on the same outing.
Get the outer layer’s size from the Snowsuit Size Calculator, check the wind chill with the Outdoor Time Limit tool, and take bulky layers off before the car seat.
Frequently Asked Questions
How many layers should a baby wear in cold weather?
The AAP: "The rule of thumb for older babies and young children is to dress them in one more layer of clothing than an adult would wear in the same conditions." So this guide asks what you are wearing and never suggests more than one layer above it. The temperature table only lowers the count further in milder weather.
Why does the suggestion drop when my toddler is active?
A crawling or walking toddler makes their own warmth and can overheat and sweat under too many clothes, so the guide drops a layer for active play.
How do I tell if my baby is too hot?
The AAP: "Check your baby for signs of overheating such as sweating, a hot chest or flushed skin." Feel the chest or the back of the neck rather than the hands and feet, which run cool. If your baby is hot or sweaty, take a layer off.
What about the car seat and sleep?
Neither is covered here. In the car, the AAP says "babies and children should wear thin, snug layers rather than thick, bulky coats or snowsuits" under the harness. Indoors, the hat comes off: "Don't put a hat on your baby while indoors once you're home from the hospital."
Is this a substitute for medical advice?
No. It is general guidance built on the AAP's rule of thumb and our own temperature table. Premature or unwell babies may need different care: ask your pediatrician.
Informational guidance built on the AAP’s one-more-layer rule of thumb and the numbers you enter, not medical advice. Watch your baby and consult your pediatrician with any concern.