Dressing Your Baby for Sleep: A Safe Sleepwear Guide for All Seasons

Worried about how to dress your baby for sleep in different temperatures? You're not alone — it’s one of the most common questions I get asked! So I’ve put everything together here in a simple, clear guide to help you dress your baby safely and confidently at bedtime.

Why Sleepwear and Room Temperature Matter

Maintaining a safe room temperature for your baby is essential, as overheating increases the risk of SIDS (Sudden Infant Death Syndrome). Babies under 12 weeks can’t regulate their body temperature well, so it’s important to create a safe sleep environment that keeps them cozy — but not too warm.

Start With Your Instincts

First things first — trust your judgment. You know your baby best. If you’re feeling chilly in your own clothes, chances are your baby might be cold too. Most babies sleep comfortably in a room temperature of 68–72°F (20–22.2°C) when dressed appropriately.

Focus on your baby’s core temperature, not just their hands or feet, which are often cooler due to less blood flow. Feel their tummy, neck, or chest for a more accurate check.

Signs Your Baby May Be Too Hot or Too Cold

Too hot if:

• Baby feels overly warm to the touch

• Baby is sweating or flushed

Too cold if:

• Their body (not just extremities) feels cool to the touch

The TOG Rating System Explained

When choosing baby sleepwear like sleep sacks, look for the TOG (Thermal Overall Grade) rating. This tells you the thickness and warmth level of the fabric.

• 0.5 TOG: Lightweight – ideal for hot summer nights

• 1.0 TOG: Medium weight – versatile for year-round use

• 2.5+ TOG: Heavy – best for colder winter months

Still unsure? I’ve made it even easier for you...

Trusted Sleepwear Tips from a Certified Sleep Consultant

Sleep sacks are one of my favorite tools for safe, consistent sleep — both my girls used them! They act as a sleep cue and keep your baby warm without loose blankets. From budget-friendly options to luxury picks, they’re a great investment.

Check out my favorite sleep sack recommendations on Amazon right here.

Need More Help with Baby Sleep?

If your baby isn’t sleeping well, I’ve got loads of support for you. Whether you're breastfeeding, combo feeding, using a pacifier, or navigating multiple night wakings — I can help!

✨ Click here if your baby is under 3 months
✨ Click here if your baby is 4–24 months
✨ Click here if your little one is 2 years or older

Inside the Cozy Baby Sleep Course, I teach you how to build great sleep patterns, understand your baby’s sleep needs, and gradually guide them toward longer stretches of independent sleep. If you're tired and unsure what to do next — I'm here to help.