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Dressing your baby in winter

In winter the magic word is layering: several thin layers instead of one thick one. Warming pockets of air form between the layers, and you can add or remove clothing flexibly – for instance when you come in from a cold walk into a warm supermarket.

In short: long-sleeve bodysuit as the base, then boiled wool or fleece, then, depending on the cold, a jacket or snowsuit. Hat over the ears, footmuff in the stroller – and in the car no thick jacket under the harness.

By Felix Plaschka, developer of HeyFini and dad of a daughter. Published 23 June 2026, last reviewed 23 June 2026.

We are parents, not doctors. This guide does not replace a visit to your midwife, health visitor or pediatrician. Facts and figures come from the sources listed. More about us.

Chart: winter clothing by temperature

TemperatureRecommendation
8–12 °C
cold
Long-sleeve bodysuit · boiled-wool or fleece suit · jacket · hat over the ears · mittens · footmuff in the stroller
3–7 °C
very cold
Long-sleeve bodysuit + sleepsuit or boiled wool · winter jacket or snowsuit · warm hat · mittens · warm footmuff
below 3 °C
frost
Warm winter all-in-one · thick hat over the ears · neck scarf instead of a loose scarf · thick mittens · sheepskin footmuff

Safety in the car seat: this one matters

⚠️ No thick or padded jacket and no snowsuit in the car seat. In a crash the padding is compressed and the harness then sits too loosely. Better: dress thin, fasten the harness snugly and lay a blanket over the fastened harness. That's the recommendation of the ADAC, Germany's automobile club.

Frost: keep it short & check

In sub-zero temperatures keep time outdoors short and check cheeks and neck regularly. Skin with cream on it freezes faster – in frost, use a special cold-protection cream rather than a water-based one. Once indoors, quickly remove a layer so your baby doesn't get too warm.

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Frequently asked questions

Why no thick jacket in the car seat?

It compresses in a crash and the harness sits too loosely (ADAC). Dress thin, harness snug, blanket over the harness.

How many layers in winter?

Several thin ones: long-sleeve bodysuit, boiled wool or fleece, then jacket or snowsuit, hat, footmuff.

Are cold hands a problem?

No, they're normal in babies. What counts is a warm, dry neck.

HeyFini

By Felix & Merle · parents of Josefine

We built HeyFini out of our own everyday life with a baby. Our recommendations are based on recognised sources, among them the Lullaby Trust for safe sleep and the ADAC, Germany's automobile club, for car-seat safety, and on our own experience as parents – more in our story. Last updated: June 2026.

More dressing guides

General guidance, not medical advice. When in doubt, ask your paediatrician or midwife.

Never wonder again what your baby should wear

HeyFini suggests what fits based on the weather where you are, and predicts when the next feed and nap are due. Free on the App Store, no account needed.

Sources: Safe sleep and TOG values: The Lullaby Trust, the UK safer-sleep charity; room temperature in the UK: NHS; clothing layers and room temperature in the US: American Academy of Pediatrics (AAP) and NICHD Safe to Sleep; clothing in the car seat: ADAC, German automobile club, child seat guidance; overheating and the neck check: German Professional Association of Pediatricians (BVKJ).

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