Attaching a battery-operated fan to the stroller wasn't very effective either at reducing the stroller temperature, cooling the carriage by just 0.1℃ relative to outside.

 Attaching a battery-operated fan to the stroller wasn't very effective either at reducing the stroller temperature, cooling the carriage by just 0.1℃ relative to outside.

But dampening the cloth can reduce the temperature in the carriage.

Why are babies vulnerable in the heat?

There are three main reasons why babies might struggle more in hot weather compared to adults.

First, their body shape is very different. Infants have a much greater area of skin surface available to exchange heat with the surrounding environment, compared to their body mass. This means in very hot conditions their body temperature can warm up at a much faster rate.

Second, infants can't sweat as much as mum or dad and are therefore less able to cool down by sweat evaporation. This is the main physiological disadvantage that places them at greater risk in hot weather.

Finally—and possibly most importantly—babies are almost entirely dependent on someone else to keep them cool. Other than crying, babies can't communicate that they are too hot. On a hot day, it is the parents who have to check for signs of distress, choose suitable clothing, and make sure shade is found during the hottest part of the day (normally noon to 3pm). Babies can't do any of this for themselves.