Baby Water Intake Guide

Enter your baby’s age to see general guidance on water: when it’s needed, how much is typical, and the important safety note for the early months. Milk — breast or formula — is the main drink in the first year.

Baby’s age (months)

Enter your baby’s age to see water guidance for their stage.

A good hydration sign

Regular wet diapers (around six or more a day for younger babies) and pale urine are reassuring signs your baby is well hydrated.

General information only, not medical advice. Never give water to a baby under 6 months without your provider’s guidance — follow your healthcare provider for your baby.

How it works

For the first six months, babies get all the fluid they need from breast milk or formula, even in hot weather. Extra water before six months can be genuinely risky, so it’s only given on a provider’s advice. From around six months, small sips of water alongside solids help babies learn to drink from a cup.

Through the toddler years, water becomes a normal part of the day alongside milk and food. The amounts here are general ranges — your baby’s needs shift with activity, weather, illness and how much milk they’re still drinking.

Frequently asked questions

Can I give my newborn water? +

Generally no. Before six months, babies don’t need water, and too much can dangerously dilute the sodium in their blood. Only offer water to a young baby if your healthcare provider specifically advises it.

When can babies start drinking water? +

Usually around six months, when solids begin. Offer small sips from an open or free-flow cup with meals — it’s about practice and a little hydration, while milk remains the main drink.

How much water does a toddler need? +

It varies, but roughly 1–4 cups of water a day across the toddler years, alongside milk and the fluid in food. Let thirst, activity and weather guide you, and offer water regularly.

What about water in hot weather? +

Under six months, offer more frequent milk feeds rather than water. Older babies and toddlers can have extra water in heat — watch for steady wet diapers as a sign they’re well hydrated.