Dress a Baby in Hot Weather - Put a light-colored T-shirt or onesie over the baby's diaper in very hot weather. Dark colors trap heat, so plain white is best. If it is very hot, and the baby will not be in direct sunlight, skip the clothing and let the baby relax in nothing but a diaper.
Keep the baby under an umbrella or use the sunshade on the stroller to avoid sunburn. Do not use sunblock on a baby under six months old. Put a hat or bonnet on the baby to prevent the glare from the sun from hurting her eyes.
Dress a Baby in Hot Weather
Keep a lightweight sweater or loosely woven blanket handy when you go from the heat of the outdoors into an air-conditioned room. The sudden temperature change can cause the baby to get chilled.
Avoid synthetic fabrics. Natural fibers like cotton and linen breathe better than synthetics, allowing air to circulate next to the baby's skin.
If you use a sling to carry the baby or a blanket to cover up while breastfeeding, make sure the baby does not get too hot. A cool (not cold) washcloth over the baby's head or chest will help him cool off.
Blankets and booties are great for mid-winter babies, but babies in the middle of summer need a different wardrobe. Not only is this a matter of comfort, it affects their health and safety as well. Very young babies (under six months of age) do not have the ability to regulate their body temperature as well as older babies and children, so they can overheat and get chilled more easily. Dress your baby for the weather, and they will be more comfortable and at less risk for dehydration and overheating. - by eHow
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