1 May 2025 · Roshni Mahtani Cheung
Cofounder, Little Rei · Mother of one
What Should a Baby Wear to Sleep in Singapore: With and Without Air-Con?
Other countries dress their babies by season. We dress ours by remote control. The same cot in the same room can be a warm 30°C with the windows open or a brisk 22°C an hour after the air-con starts, and the whole art of baby sleepwear in Singapore is dressing for the room you've made, not the island outside it.
The good news is that the whole business reduces to three outfits. Learn them once and every night afterwards sorts itself out, which is roughly the level of complexity anybody should be asked to manage at eleven in the evening.
What should baby wear to sleep with air-con on?
For a room held at 22-24°C: a long- or short-sleeved onesie with a bamboo sleep sack over it. The sack does what a blanket can't. It stays on at 4am, it can't ride up over a face, and it keeps the chill off a kicked-free tummy. Bamboo counts here too, because an air-conditioned room is dry, and bamboo keeps a soft warmth without the sweaty rebound the moment the compressor rests.
What should baby wear without air-con?
For the fan-only night at 27-30°C: a single light layer. A short-sleeved onesie alone, or for a newborn a bamboo swaddle over nothing but a nappy. The muslin is the blanket, so resist the grandmother's instinct to add one more layer. Overheating, not chill, is the discomfort of this climate, and it's also the one that goes with less safe sleep.
Mentioned above
Bamboo Swaddle Single (Printed)S$29.00Shop now
Swaddle Wrap with VelcroS$55.00Shop nowBy sleepwear format
How to know if your baby is too hot or too cold
Ignore the hands and feet, which run cool on every baby and mislead every parent. The truth lives at the back of the neck or the chest: warm and dry is perfect, damp or sweaty means one layer too many, cool skin there means add one, and check ten minutes after settling, not at the door on your way out. One caution from my own house, because I got it wrong for years. Everyone will tell you that a child who throws her covers off is too hot. Usually true. Not always. Mine threw hers off every night and was cold underneath, and she simply couldn't stand the weight and the texture of the blanket, and she'd rather be cold than have it on her. Read that as overheating, take a layer away, and you've made it worse.
Check the neck for the temperature question. Then ask a separate question about the cover itself: how heavy is it, and would she accept a thinner one? If she refuses a cover and seeks warmth off a person at the same time, that pairing is about the cloth, not the thermostat.
- 22-24°C (air-con night): onesie + bamboo sleep sack.
- 25-26°C (air-con set gently), short-sleeve onesie + light sleep sack, or swaddle alone for a newborn.
- 27-30°C (fan only), one light layer: onesie alone, or swaddle over a nappy.
- Any temperature. Nothing loose in the cot; a sleep sack or swaddle in place of a blanket for the first year.
One rule underneath it all: dress baby as you would dress yourself for that room, then swap the blanket for something that can't slip.
When blankets come in
Past the first birthday, a toddler earns a proper blanket. Ours are layered bamboo, two layers for air-conditioned rooms, the cooling weave for warm sleepers, so the answer to the remote control stays the same: bamboo breathes both ways.
Mentioned above
2 Layer Blanket (120x120cm)S$85.00Shop now
Bamboo Cooling Blanket (120x150cm)S$135.00Shop nowThis guide is general information, written to help you understand a topic and ask better questions. It is not medical advice and does not replace your own doctor, midwife or paediatrician. Anything that worries you about your baby belongs with them.