How to stay hydrated while breastfeeding

Breastfeeding is thirsty work, literally. When you're feeding your baby around the clock, your body is working hard to produce breast milk, which is made up of almost 90% water. So it's no surprise that staying hydrated is especially important during this time.

In this guide, we'll walk through how much water breastfeeding mums need, how to spot signs of dehydration, and simple ways to stay on top of your fluid intake without adding stress to your already busy day.

Why Hydration Matters When You're Breastfeeding

Breastfeeding increases your daily fluid needs. On average, breastfeeding mums produce around 700–800mL of breast milk each day during the first six months postpartum. That's a lot of extra fluid your body needs to account for, on top of your usual hydration needs.

When you're busy caring for a newborn, it's easy to forget to drink enough water. Staying hydrated helps support your body's normal functions and overall wellbeing, especially during those demanding early months.

Guidelines at a Glance:

• Australian guidelines: Approximately 2.6 litres of fluids from drinks daily, or 3.5 litres of total water including food.

• European guidelines: Approximately 2.7 litres of total water daily, including food and drinks.

• US guidelines: Approximately 3.8 litres of total water daily, including around 3.1 litres from drinks.

These recommendations differ, but they all highlight the importance of staying hydrated while breastfeeding. Remember, total water intake includes both the fluids you drink and the water found naturally in foods.

It's not just about hitting a number. Your hydration needs can vary depending on the weather, your activity levels and how often your baby is feeding.

Signs of Dehydration While Breastfeeding

Sometimes the signs of dehydration can sneak up on you, especially if you're focused on baby care, juggling visitors, or simply forgetting to drink enough.

Common Signs to Watch For:

• Feeling very thirsty

• Headaches

• Fatigue or tiredness

• Muscle cramps

• Dizziness or lightheadedness

• Dry mouth and lips

• Dark yellow wee or going less often

• Constipation

• Nausea

• In more severe cases, a reduction in milk supply

While mild dehydration usually won't affect your milk supply, more severe dehydration may impact milk production and your overall wellbeing.

How Dehydration Can Affect You (and Your Baby)

Your Milk Supply: Your body naturally prioritises milk production, even when you're a little low on fluids. However, severe dehydration may affect milk production and your overall wellbeing.

Your Wellbeing: Dehydration can make you feel foggy, irritable and tired, none of which is helpful when you're looking after a baby. It may also make it harder to focus on feeding, settling and bonding.

Your Baby's Feeds: If your milk supply is affected by severe dehydration, your baby may not get enough milk during feeds. If you're concerned about your milk supply or your baby's intake, speak with your healthcare professional or lactation consultant.

How Much Water Do Breastfeeding Mums Need?

There's no one-size-fits-all answer, but here's the general rule:

Drink to thirst, and make sure water is always within reach.

As a general guide, Australian recommendations suggest around 2.6 litres of fluids from drinks each day for breastfeeding mums, although individual needs can vary.

Quick Hydration Tips:

• Drink during every feed: Keep a full water bottle next to your nursing chair or in your nappy bag.

• Keep it accessible: Having water within arm's reach makes it easier to stay on top of your fluid intake.

• Include hydrating foods: Watermelon, cucumber, oranges, strawberries and soups all count!

• Mix up your hydration: Finding plain water a little boring? Hydramama® is a Sugar Free hydration drink available in 12 delicious flavours, with added Sodium, Potassium, Magnesium, Methylated Folate and Vitamins B6 + C.

• Use gentle reminders: Set a phone alert, or tie drinking water to another habit (like after nappy changes).

• Track your wee: Pale yellow urine is generally a good sign you're hydrated. Dark yellow may mean it's time for a top-up.

• Be mindful of caffeine: Coffee and tea count towards your daily fluid intake, but it's worth keeping an eye on your caffeine consumption while breastfeeding.

The Takeaway

Hydration doesn't need to be another thing on your to-do list. A few simple habits can make all the difference. Keep water nearby, listen to your thirst and don't ignore early signs of dehydration. Staying well-hydrated helps you feel your best while giving your body what it needs during breastfeeding. Because looking after yourself is an important part of looking after your baby, too.