Safe sleep is the top priority for every new parent. In Australia, where temperatures can fluctuate 10 degrees in a single evening, mastering the art of layering is the best way to ensure your baby doesn't overheat or wake up chilled.
The Golden Rule: The "Plus One" Layer
A trusted rule of thumb for Australian parents is to dress your baby in one more layer than you would wear yourself to be comfortable in the same room.
How to Layer Using Rai & Co Bestsellers
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Warm Summer Nights (24°C+): Keep it minimal to prevent overheating. A Basic Singlet Bodysuit paired with our Undyed Organic Cotton Muslin Wrap is often enough. The muslin is incredibly breathable, allowing for maximum airflow.
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Mild Autumn & Spring (20–22°C): This is the ideal environment for a long-sleeve layer. Use our bestselling Ribbed Onesie. If their feet feel a bit cool and you prefer not to use the fold on feet, add a pair of Fibre for Good Organic Baby Socks.
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Cool Winter Nights (Below 18°C): Look at our buttery soft Apple Onesie. Its 280gsm "winter weight" fabric acts as a cosy, protective cocoon. For supervised daytime naps in the bassinet, you can tuck them in with our Heirloom Baby Blanket for that extra layer of warmth and security.
Frequently Asked Questions
What is the best fabric for newborns in hot or humid weather? For warmer climates or summer heatwaves, we highly recommend our Lightweight Eco fabric. It is specifically designed to be breathable and moisture-wicking. Our Lightweight Eco Onesie is the perfect sleep choice for hot nights because it offers full coverage to protect the skin while remaining incredibly thin and airy. For daytime naps during the height of summer, our Mini Ribbed Romper or the Lace Frill Romper provide a breezy, leg-free option that prevents heat rash while keeping your baby looking adorable.
Should I choose a romper or a full onesie for my newborn's nap? This depends entirely on the room temperature. If the nursery is between 24°C and 26°C, a Mini Ribbed Romper is an excellent choice as it allows for better air circulation around the legs. However, for overnight sleep or in air-conditioned rooms, a full-length Lightweight Eco Onesie is usually better to ensure their temperature remains stable. If you want a more decorative look for daytime rests or photos, the Lace Frill Romper offers that same breathable comfort with beautiful feminine detailing.
How do I know if my newborn is too hot while sleeping? The best way to check is by feeling your baby's chest or the back of their neck. If the skin feels hot or clammy, remove a layer like a singlet or swap to a more breathable Ribbed Onesie or a Lightweight Eco Onesie.
Can my baby wear a beanie to sleep? No. While our Baby Beanies are perfect for outdoors, they should never be worn for sleep as babies regulate their temperature through their heads.
What is the best fabric for newborn sleep? Natural cotton is the gold standard. The Fibre for Good pieces uses undyed organic cotton which is exceptionally breathable, helping to prevent overheating during the night. For a lightweight, sustainable alternative, our Lightweight Eco range is a fantastic choice for year-round comfort.
Want to learn more?
Read our blog: How to dress baby for sleep or get more knowledge on the Ultimate Checklist of Baby Essentials.