It’s important to keep baby well hydrated in hot and humid weather. Breastfed babies do not need additional drinks as they will feed more frequently to satisfy thirst. Bottle-fed babies can be offered cooled boiled water. If using bottled water, check the label to ensure the sodium content is below 20mg per litre. Just like tap water, bottled water must also be boiled and cooled. More detailed information is available on this fact sheet.