Summer is here, temperatures are rising, and you’re breastfeeding… So naturally, you have questions. Does my baby need to drink more? Is my milk nutritious enough? What should I wear when breastfeeding during a heatwave? And at night, how should I dress him/her to prevent being too hot… or too cold?
Here’s everything you need to know to breastfeed with peace of mind when the thermometer goes above 30°C.
Why breastfeeding is still ideal when it's hot
Just a reminder: before weaning, a breastfed baby feeds on demand.
Lactation continuously adjusts to their needs, even in summer. This is the principle of supply and demand.
Breast milk, made up of more than 85% water, perfectly meets your baby’s hydration needs, even in the heat. There is no need to give water, unless advised by a doctor.
But that’s not all: breastfeeding also plays a thermal role thanks to the skin-to-skin contact, which allows the mother’s body to act as a true temperature regulator for the baby. This is called cross-temperature regulation: if the baby is too hot, the mother’s chest temperature slightly lowers to cool him/her down; conversely, it increases if the baby is cold. This natural mechanism is especially precious for newborns, who don’t yet have the ability to regulate their body temperature well.
And contrary to some misconceptions, giving water to a breastfed baby can disrupt lactation.
Why? Because if the baby drinks water, their stomach fills up… without receiving any calories or nutrients. This means they will suckle less, signaling to the body that less milk is needed. As a result, milk production can slow down, when the goal is actually to increase or maintain it.
Furthermore, water can dilute the minerals in the infant’s blood, which is not without risk. Breast milk, on the other hand, naturally contains the water, calories, and electrolytes that the baby needs, even in hot weather.
The World Health Organization (WHO) recommends not giving water before 6 months for exclusively breastfed babies, even in cases of extreme heat.
And after weaning?
Continue offering the breast on demand: breast milk remains a valuable source of hydration.
But at this stage, you can also offer a little water, especially during meals, to accompany the introduction of solid foods.
However, make sure to stay well-hydrated and allow the baby to nurse as often as needed. During a heatwave, there will be "meal-feedings" and "drink-feedings." The milk at the start of a nursing session is very hydrating and contains minerals that are more bioavailable than those in water. It’s thanks to these minerals that there’s less risk of dehydration and other heat-related issues.
Breastfed baby: how to avoid dehydration?
Here are some simple guidelines to make sure everything is fine:
Offer the breast more frequently than usual, even if the feeding is shorter. This allows the baby to access the milk at the beginning of the session, which is richer in water.
Watch for signs of good hydration: at least 5 well-soaked diapers within 24 hours, a moist tongue, and good muscle tone.
Be especially vigilant with infants under 6 weeks old.
Our tips for breastfeeding calmly during a heatwave
And you, how to stay well-hydrated?
Even though your milk doesn’t come directly from the water you drink (it’s made from your blood), staying hydrated is still essential.
In case of dehydration, you risk feeling more tired, and less available to respond to frequent feedings, especially during heatwaves.
In summer, your water needs increase. Remember to drink regularly, even if you’re not thirsty.
Always keep a water bottle nearby: the sensation of thirst is already a sign that your body is lacking water.
Avoid sugary or overly caffeinated drinks, which don’t provide optimal hydration. Water is the ideal beverage, but cold infusions, homemade flavored waters, or water-rich fruits can also help you maintain good hydration levels.
💡 Useful tip: a rechargeable misting fan will bring you relief, and the baby will appreciate it too. There are very practical ones to slip into your diaper bag or purse.
Milk leaks and sweating: how to avoid discomfort?
Between the heat and the milk letdown, your breasts can sometimes be under strain. To avoid stains, feelings of dampness, or rubbing:
Choose absorbent, breathable, and ultra-comfortable breastfeeding lingerie.
At Mama Hangs, our three models (Mama Glow, Essential Bra and Day n’ Night) are designed to support you daily. Made of micromodal, a fiber derived from beechwood, they offer incomparable softness, great elasticity, and natural antibacterial properties. The result: less odor, faster drying than cotton, and comfort that makes all the difference.
Our models are also seamless and without underwire, for absolute comfort even during milk letdown or when temperatures rise.
What clothes to wear for breastfeeding in summer?
For you: go for light and practical clothes that are easy to open around the chest: crossover tops, breastfeeding tops, or button-down dresses. Opt for loose cuts and natural fabrics, which are more breathable.
For baby: a simple cotton bodysuit is enough, or just a diaper if it's very hot. When carrying, a small bloomer or just a diaper depending on the temperature.
The Carry & Pack baby carrier from Mama Hangs is your best ally from birth up to 18 months. It slips on like a t-shirt, is worn against the skin, and its opening at the neckline allows for quick and intuitive breastfeeding – perfect for short, frequent feedings typical of hot days.
And at night?
It’s tricky to know how to dress your baby to sleep when it’s hot… Here are some guidelines:
Between 24 and 26 °C: short-sleeved onesie + light sleeping bag.
Between 27 and 29 °C: sleeveless onesie or diaper + summer sleeping bag.
Above 29 °C: just a diaper, and nothing more.
Note: If your baby sleeps in the same room as you, their sleep may also be influenced by your presence. Don’t hesitate to ventilate the room during the day, close the curtains, and offer a lukewarm bath at the end of the day.
On a walk: breastfeeding easily outdoors
Breastfeeding outdoors when it’s hot can require some organization:
Set up in the shade, and in a quiet place if possible.
Always have a muslin cloth or a light blanket to cover up discreetly if needed.
For carrying: use a soft baby carrier with a light cover, and avoid layering clothes.
Be sure to stay hydrated as well, before, during, and after the outing.
A few random tips for summer
Slip a small ice pack wrapped in fabric into your bag to cool your baby (or yourself!).
Always have a rechargeable misting fan at hand.
Opt for an easy-to-lift t-shirt for quick breastfeeding, especially if you are carrying your baby.
Think natural materials, light clothing, and well-designed products for summer (appropriate lingerie, breathable baby carriers, multifunctional muslin cloths…).
Summer can also be your ally
Yes, breastfeeding can be more uncomfortable in the summer. But this season also has its benefits:
You can stay skin-to-skin for longer without worrying about drafts.
Clothes are easier to open, even outdoors.
And most importantly, you can enjoy precious moments on walks, at the beach, or on a terrace, without stress.
FAQ – Answers to your questions about breastfeeding in the summer
Do I need to give water to my breastfed baby?
Not before 6 months, unless otherwise advised by a doctor. Breast milk covers all of their needs.
It’s very hot, my baby is breastfeeding more often than usual, is that normal?
Yes! They are hydrating by taking shorter but more frequent feedings. No need to worry.
It’s hot, and my breasts feel empty!
Don’t panic: your breasts are never truly empty. Milk is produced continuously, even between feedings. However, during hot weather – like during growth spurts – your baby may nurse more frequently, which can give the sensation of "empty breasts." Lactation will naturally adjust to this increased demand, it just takes a little time. Trust your body: it follows your baby’s rhythm.
Can I breastfeed at the beach?
Of course! As long as you are in the shade and staying hydrated. Don’t forget to protect your baby (hat, muslin cloth, etc.).
I have less milk than before, is it related to the heat?
Heat can make you tired or dehydrated, which temporarily impacts milk production. Drink plenty of water, rest, and stimulate regularly.
Which breastfeeding bras are best for summer?
Absorbent, wireless, breathable models. Like the Mama Glow or Essential Bra, designed for maximum comfort even in the heat.
Which baby carrier is recommended for summer?
A lightweight, breathable, easy-to-wear model like the Carry & Pack. It also allows for quick breastfeeding and skin-to-skin carrying if needed.
The Carry & Pack baby carrier from Mama Hangs is your best ally from birth up to 18 months. It slips on like a t-shirt, is worn against the skin, and its opening at the neckline allows for quick and intuitive breastfeeding – perfect for short, frequent feedings typical of hot days.
And at night?
It’s tricky to know how to dress your baby to sleep when it’s hot… Here are some guidelines:
Between 24 and 26 °C: short-sleeved onesie + light sleeping bag.
Between 27 and 29 °C: sleeveless onesie or diaper + summer sleeping bag.
Above 29 °C: just a diaper, and nothing more.
Note: If your baby sleeps in the same room as you, their sleep may also be influenced by your presence. Don’t hesitate to ventilate the room during the day, close the curtains, and offer a lukewarm bath at the end of the day.
On a walk: breastfeeding easily outdoors
Breastfeeding outdoors when it’s hot can require some organization:
Set up in the shade, and in a quiet place if possible.
Always have a muslin cloth or a light blanket to cover up discreetly if needed.
For carrying: use a soft baby carrier with a light cover, and avoid layering clothes.
Be sure to stay hydrated as well, before, during, and after the outing.
A few random tips for summer
Slip a small ice pack wrapped in fabric into your bag to cool your baby (or yourself!).
Always have a rechargeable misting fan at hand.
Opt for an easy-to-lift t-shirt for quick breastfeeding, especially if you are carrying your baby.
Think natural materials, light clothing, and well-designed products for summer (appropriate lingerie, breathable baby carriers, multifunctional muslin cloths…).
Summer can also be your ally
Yes, breastfeeding can be more uncomfortable in the summer. But this season also has its benefits:
You can stay skin-to-skin for longer without worrying about drafts.
Clothes are easier to open, even outdoors.
And most importantly, you can enjoy precious moments on walks, at the beach, or on a terrace, without stress.
FAQ – Answers to your questions about breastfeeding in the summer
Do I need to give water to my breastfed baby?
Not before 6 months, unless otherwise advised by a doctor. Breast milk covers all of their needs.
It’s very hot, my baby is breastfeeding more often than usual, is that normal?
Yes! They are hydrating by taking shorter but more frequent feedings. No need to worry.
It’s hot, and my breasts feel empty!
Don’t panic: your breasts are never truly empty. Milk is produced continuously, even between feedings. However, during hot weather – like during growth spurts – your baby may nurse more frequently, which can give the sensation of "empty breasts." Lactation will naturally adjust to this increased demand, it just takes a little time. Trust your body: it follows your baby’s rhythm.
Can I breastfeed at the beach?
Of course! As long as you are in the shade and staying hydrated. Don’t forget to protect your baby (hat, muslin cloth, etc.).
I have less milk than before, is it related to the heat?
Heat can make you tired or dehydrated, which temporarily impacts milk production. Drink plenty of water, rest, and stimulate regularly.
Which breastfeeding bras are best for summer?
Absorbent, wireless, breathable models. Like the Mama Glow or Essential Bra, designed for maximum comfort even in the heat.
Which baby carrier is recommended for summer?
A lightweight, breathable, easy-to-wear model like the Carry & Pack. It also allows for quick breastfeeding and skin-to-skin carrying if needed.
To sum up
Offer the breast more often – baby will naturally self-regulate.
Stay hydrated, rest, and wear light clothing.
Choose well-fitting nursing lingerie.
Listen to your body (and your needs!).
Wishing you all a lovely summer ☀️