It’s Hot Out: Can I Give My Baby Water?

As summer temperatures rise, many parents wonder if giving their baby water is a good idea for hydration. While it’s a common question, the answer for most babies is a resounding no until they reach a certain age.

Why young babies shouldn’t drink water

For babies under six months old, breast milk or formula provides all the hydration they need, even in hot weather. Offering water too early can be harmful. Here’s why:

• Tiny tummies, no room for extras
  Newborns’ stomachs are small. Filling them with water, which has no calories or nutrients, can crowd out the breast milk or formula babies need to grow and thrive.

• Risk of water intoxication
  Although rare, giving too much water to an infant can dilute sodium levels in the body, leading to a condition called water intoxication. This can cause seizures, brain swelling, and in extreme cases, death. The National Institutes of Health warns of this serious medical concern.

• Disrupted feeding routines
  Water can make babies feel full, which may lead to shorter or skipped feedings. For breastfeeding mothers, this can reduce milk supply. For formula-fed babies, it may result in fewer calories than needed.

When can babies start drinking water?

The American Academy of Pediatrics recommends waiting until your baby is around six months old before offering small amounts of water. At this age, babies typically begin solid foods, and a few sips of water with meals are acceptable. However, breast milk or formula should remain their primary source of hydration until their first birthday.

Signs of dehydration in infants

While water isn’t the solution, it’s crucial to recognize the signs of dehydration, especially in hot weather. Contact your Welia Health Family Medicine provider immediately if you notice any of the following:

• Fewer than 6–8 wet diapers in 24 hours
• Dry mouth or lips
• No tears when crying
• Sunken soft spot (fontanelle)
• Lethargy or unusual sleepiness
• Cool, dry skin

How to keep your baby cool and hydrated (without water)

Instead of offering water, try these safe ways to help your baby stay hydrated and comfortable:

• Offer feedings more often: Whether breastfeeding or formula feeding, increase the frequency of feedings when temperatures are high.

• Dress lightly: Choose loose, breathable clothing made from natural fabrics like cotton.

• Stay in cool environments: Keep your baby indoors with air conditioning or in shady outdoor areas.

• Never leave your baby in a hot car: Temperatures inside a parked car can rise rapidly, even on mild days, leading to heat stroke or death. For more information, consult the National Safety Council.

When in doubt, call your provider

Navigating hot weather with a baby can be challenging, but with the right strategies, you can keep your little one safe, hydrated, and happy. If you’re ever unsure, don’t hesitate to reach out to your provider—they’re there to help. Call Welia Health at 320.679.1313.