How to dress your baby in hot weather

Above about 30°C / 86°F, one lightweight, breathable garment is a practical starting point. Choose a fabric that allows airflow and avoid piling on layers simply because your baby’s hands feel cool.

If the temperature drops or you move into air conditioning, keep a thin removable layer nearby rather than dressing heavily from the start.

Babies under 6 months should be kept out of direct sunlight as much as possible. Use shade and lightweight covering clothing first. For older babies, continue to seek shade and use sun-protective clothing; follow local guidance on sunscreen.

A lightweight long sleeve can be useful for sun protection when the fabric is breathable and the baby is not overheating. Heat management does not mean leaving more skin in direct sun.

High humidity makes it harder for sweat to evaporate. On a hot, humid day, choose the coolest available time and place, take regular breaks, and shorten the outing if your baby feels hot or damp.

Use the stroller canopy, parasol or manufacturer-approved shade rather than draping a blanket or muslin over the opening. Covering the stroller can trap heat and reduce airflow; check your baby regularly.

Never leave a baby in a parked car, even briefly or with the windows open. A car can become dangerously hot quickly.

Feel the chest or back of the neck. If it is hot or sweaty, move to a cooler place, remove a layer and check again. Sweating, flushed skin, unusual fussiness or rapid breathing are reasons to take the heat seriously and seek medical help if symptoms are severe or do not improve.

For babies under 6 months, breast milk or formula should remain the main source of hydration. Extra-water advice can vary by feeding method and local guidance, so follow your pediatrician or local health service rather than adding water routinely.