When Can Babies Drink Water?

Healthy breastfed babies do not need water before 6 months old. The AAP says breastmilk (or formula) provides all the hydration a baby needs until starting solids around 6 months.

My cousin asked me when she could give her 3-month-old water on a hot day. I had the same question. The answer surprised me: not yet. Here's what I learned about when babies actually need water.

When Can Babies Start Drinking Water?

Around 6 months old, when they start solids. The AAP says healthy breastfed babies don't need water before 6 months because breastmilk is about 88% water.

The timeline: - 0 to 6 months: breastmilk or formula only, no water - 6 to 12 months: a few sips of water with meals - 12 months+: water becomes a regular drink - 12 to 24 months: about 4 to 8 oz (120 to 240 ml) per day Before 6 months, giving water can fill baby up, reduce milk intake, and in rare cases cause water intoxication. On hot days, offer more breastfeeds instead. For messy solids meals, keep wipes handy.

Can I Give My Baby Water in Hot Weather?

Not before 6 months. On hot days, offer more frequent breastfeeds or formula feeds. After 6 months, a few sips with meals is fine.

What the AAP says: - Babies under 6 months get enough hydration from breastmilk/formula - Extra water can displace needed milk and nutrients - In very hot weather, feed on demand - Signs baby is dehydrated: fewer wet diapers (under 6 a day), sunken fontanelle, no tears If your baby has fever or diarrhea, ask the doctor — they may recommend oral rehydration solution, not plain water. For on-the-go meals, I use pull-up pants and keep diapers in the bag.

How Much Water Can a Baby Drink After 6 Months?

A few sips with meals, about 4 to 8 oz (120 to 240 ml) per day. Water should complement milk, not replace it.

How I serve it: 1. A small sippy cup with meals 2. 2 to 3 ounces at a time 3. No more than 8 oz total per day 4. Milk still the main drink until 12 months Too much water fills baby up and reduces milk intake. At 6 months, I started offering a tiny cup at dinner. Most of it ended up on his lap. By 10 months he actually drank some. For more feeding essentials, browse all products.

When Can Babies Switch From Milk to Water?

Not until 12 months. Breastmilk or formula should be the main drink until baby's first birthday. After 12 months, whole cow's milk and water become the main drinks.

The transition: - 6 to 12 months: breastmilk/formula primary, water with meals - 12 to 24 months: whole cow's milk (16 to 24 oz) and water - 2 to 5 years: water, milk, limited juice The AAP says no juice before 12 months, and no more than 4 oz a day after that. For first foods, I keep a clean towel and tissues under the high chair.

FAQ

Q: Can I give my 4-month-old water on a hot day?
No. Offer more breastfeeds or formula. The AAP says no water before 6 months for healthy babies.

Q: Is bottled water safe for babies?
Use distilled or nursery water for formula. Tap water that's safe for you is fine for babies over 6 months.

Q: How do I know if my baby is dehydrated?
Fewer than 6 wet diapers a day, no tears when crying, or a sunken soft spot. Call the doctor.

Q: Can I add water to formula?
No. Always follow the formula ratio exactly. Adding extra water can dilute nutrients and is dangerous for newborns.

Bottom line: Healthy breastfed babies don't need water before 6 months. Start with a few sips with meals around 6 months, and build to 4 to 8 oz (120 to 240 ml) a day by 12 months. Milk remains the main drink until the first birthday.