top of page
Search

How to Keep Your Baby Cool and Safe in Hot Weather

Updated: Aug 12

A baby cools off in a kiddie float in a pool
Keep your baby cool in a heatwave

How to Keep Your Baby Cool in a Heatwave

Here in Canada, the weather has been hot. This summer, my second grader’s school even closed for a full day because of extreme heat — something I’ve never seen before! We live just outside Ottawa, in the Quebec countryside, and while we’ve never needed air conditioning before, it’s starting to feel like it might be in our future.


When the temperature climbs, my thoughts go straight to parents with newborns. Heat is more than uncomfortable for babies — it can be dangerous. Overheating can lead to heat rash, fussiness, lethargy, dehydration, and even increase the risk of sudden infant death syndrome (SIDS).


So how can you keep your little one safe and cool when the summer sun is blazing? Let’s start with what to watch for.


First: Know the Signs of Overheating


If your baby shows any of these, act right away:

  • Feels hot to the touch

  • Looks flushed or red

  • Sweating or damp hair

  • Unusual fussiness

  • Fast heartbeat

  • Very tired or hard to wake

  • Vomiting


What to do: Move your baby to a cooler place and offer age-appropriate fluids. Seek medical advice if symptoms don’t improve quickly.


  1. Keep Baby Hydrated

    • Frequent feeds: Babies may want to feed more often in hot weather — let them! This helps maintain hydration.

    • Under 6 months: No extra water — breastmilk or formula provides all the fluids they need.

    • Over 6 months: Small sips of water between feeds and with meals are safe.

  2. Dress for the Weather

    • Breathable fabrics: Choose cotton or other natural fibres.

    • Light colours: Reflect the heat.

    • Minimal indoors: A onesie or just a diaper can be enough inside.

  3. Avoid the Hottest Hours

    • Stay inside between 10 AM–4 PM when the sun is strongest.

    • If you go out, aim for early morning or evening.

  4. Prioritize Shade & Airflow

    • Use stroller shades with mesh panels for ventilation.

    • No blankets over car seats or strollers — this can trap dangerous heat.

    • Babies under 6 months: use hats and long, light layers instead of sunscreen.

    • Babies over 6 months: apply baby-safe sunscreen to exposed skin.

    • Never leave a baby in a parked car — even for a minute.

  5. Keep Your Home Cool

    • Close blinds and curtains during the day.

    • Use fans to create a cross-breeze.

    • Ideal sleep temperature: 20–22°C (68–72°F).

    • No AC? Put a bowl of ice in front of a fan for a quick cool-down.

    • Light, breathable sleepwear — and no blankets for sleeping infants.

  6. Cool Off with Water

    • A lukewarm bath can gently lower body temperature.

    • Pat dry and dress in light clothing.

    • A cool, damp washcloth on the neck, underarms, or behind the knees can help.

  7. Be Mindful with Babywearing

    • Carriers and slings can trap heat — limit use during the hottest hours.

    • Use lightweight, single-layer fabrics for better airflow.


A baby keeps cool in a pool floatie
I love helping families navigate the early days of postpartum 💛

The Bottom Line

Keeping your baby cool in a heatwave is more than a comfort issue — it’s a safety must. With a few simple adjustments, you can help your baby stay safe, hydrated, and happy all summer long.


💛 Need newborn care or breastfeeding support? I love helping families navigate the early days. Whether you’re looking for practical tips, hands-on help, or a calm voice in your corner, I’m here for you. Book your service here or send me a message — I’d love to chat.





 
 
bottom of page