Many people believe that you should dress
your newborn in lots of layers because babies are colder than adults are.
Although it may be true that a newborn or preemie's body may not be mature
enough to fully regulate body temperature, we have since learned that
babies are just like us when it comes to body heat and temperature. Hot
weather, cold weather, inside or outside, dress your baby as you would
yourself.
In hot weather, remove clothing but protect from direct sun
exposure. Babies are prone to heat rash and sunburn, so keep them cool
as you would yourself. Give lots of fluids, dress in lightweight, light
colored clothing and use a 30 SPF or higher sunscreen. (Sunscreen is
not recommended for babies under 6 months of age, so protect younger
infants by keeping them out of the direct sun.) Cottons that breath
tends to be better in warm weather.
In cold weather, protect baby's skin and body from the cold.
Heat from a baby's body tends to escape from the head, so a warm hat
would be necessary. The extremities (arms, hands, legs, and feet) will
chill more quickly than the trunk of the body, so protect with layers
of clothing for cold exposure. Offer plenty of fluids and food prior
to venturing out in the cold.
When coming indoors from extreme outside temperatures, add or
remove clothing as necessary.
At night, dress your child in appropriate clothing for the temperature
in his room.
If in the summer temperatures are above 78 degrees Fahrenheit in
the nursery and your baby is about to go to sleep, dress in light
clothing and use a lightweight blanket (although no blanket may be
necessary).
During the winter in colder climates, use a tee shirt under heavy
weight pajamas if baby's bedroom temperatures are to fall below 60
degrees Fahrenheit. Footed pajamas or socks are preferred as many
babies kick off blankets while sleeping.
Infants (0-2 weeks) can be swaddled for
cooler temperatures as well.
Babies will cry or fuss if they are inappropriately
dressed and are too warm or too cold.