Every summer, a major tragedy (one or more) occurs in nearly every big city, it’s because some mothers are completely unaware that hot weather can produce special hazards for baby.
Babies do not have a very satisfactory heat-regulatory mechanism when they are young. It develops and improves as they grow older.
NEVER, under any circumstances, leave your baby alone in a parked car. This can be (and has been) lethal. Although a car may be in the shade when you leave it. The sun moves quickly, and it can be in the full direct heat of the fierce rays half an hour later.
Some parents have left babies in cars for hours with all windows up and doors locked. Disaster is inevitable. In midsummer the inside of a car in the sun can become almost as hot as an oven.
Dress baby sensibly in hot weather. Loose-fitting, lightweight garments are essential. Diapers alone are often suitable. Put the bassinet or basket (or whatever he sleeps in) in a well ventilated room in the cool part of the house, when the temperatures soar.
The bathroom is usually the coolest. But avoid direct drafts: a direct draft could cool him down too fast and allow a summer cold to get a foothold.
Much more fluid is essential in summer because baby will sweat a good deal. Cool boiled water, or orange juice, with some salt and glucose added is preferable. Frequent sponging is a good idea, if he is starting to get very warm.
Be very careful not to permit overexposure in the sun. Sunburn with tender baby skin is very simple to acquire. It is dangerous and can be extremely painful. Care at all times is essential, but even more so when the temperatures soar.