Dressing Your Baby Right: A Parent's Guide

How do I dress my baby right? This question comes up almost daily in the first months, and there's a real reason for it: babies can't regulate their body temperature reliably yet, they barely move and generate little warmth of their own, and they can't tell you either way.

The short answer first. In the first months, the rule of thumb is one thin layer more than you're comfortable wearing yourself. If you go out in a sweater and jacket, your baby wears a bodysuit (onesie), a footed sleeper (called a sleepsuit in the UK), and a snowsuit. Whether that adds up shows at the neck: place two fingers there, and warm and dry means it fits. Everything else is fine-tuning for the season, the weather, and the situation.

The Layering Principle

Layering is especially suited to newborns: you dress your baby in several thin layers so you can respond flexibly to temperature changes.

• Base layer: a soft, breathable cotton bodysuit directly on the skin.
• Mid layer: a long-sleeve shirt or thin sweater, which provides the warmth.
• Outer layer: a jacket or snowsuit that keeps wind and weather out, padded or lined for winter.
• Extras: hat, socks, and mittens in the cold.

If your baby gets too warm, you simply take a layer off. That's the advantage over a single thick garment, which only leaves you the choice between everything and nothing. A loose scarf explicitly doesn't belong on that list: it can tighten or slip over the face. Safer options are a balaclava-style hat or a neck warmer that closes with a snap.

The same caveat applies in every season: temperature alone says little. 15 °C (59 °F) in still air and 15 °C (59 °F) in a stiff breeze are two different days, all the more so for a baby lying still in the stroller and taking the full headwind. The sections below therefore describe conditions, not cut-off values.

Spring

Spring is the season of wide daily swings. There's frost on the grass in the morning and sun by midday. If you dress only for the morning cold, you risk overheating in the afternoon. So plan from the start with a layer that comes off easily while you're out. Sleeveless fleeces and jackets with zippers are especially practical, because they open without having to pull anything over your baby's head. The layer you take off goes into the basket under the stroller and is back within reach when it cools down again in the evening.

What gets underestimated most in spring is the wind. It chills a baby despite sunshine and turns a mild day in the stroller into a distinctly cooler one. How to handle the transitional season in detail is something we've written up separately.

Summer

In summer, dress your baby lightly to avoid overheating. A short-sleeve cotton bodysuit is enough on most warm days, and airy fabrics like muslin or linen let the skin breathe as well. Thick socks or a warm hat are out of place, since babies release excess heat mainly through the head.

More important than the clothing in summer, though, is shade. In the first year, your baby doesn't belong in direct sunlight. A stroller sunshade, shaded spots, and walks in the early morning or the evening rather than the midday heat are the real protection. From a UV index of 3, protection is needed, and on summer days it's almost always above that. Add a sun hat with a wide brim and neck flap, plus UV protective clothing with UPF 50+ wherever the skin should be covered anyway. Sunscreen comes into play only from 6 months, mineral and SPF 50+, and even then only in addition to shade and clothing. What helps on particularly hot days and how to spot overheating is covered in its own article.

Fall

In fall, wet and wind take over the lead role. The outer layer now has to be water- and wind-repellent above all, and one point is often overlooked: a rain suit doesn't warm, it only keeps your baby dry. The warmth has to come from the layers underneath, from a bodysuit up to a wool sweater depending on the day. A hat under the hood adds protection, especially since the hood alone rarely stays where it should.

Damp cold does more than the thermometer suggests. After a walk, it's worth a quick check at the neck and back: if the clothing feels damp there, change it right away. And as in spring, an extra layer belongs in the bag even when the sky is cloudless as you set out.

Winter

In winter, warmth matters. Alongside a lined snowsuit come warm socks, mittens, and a hat that covers the ears and forehead; thin bonnets slip too easily. A bodysuit and footed sleeper in wool-silk or cotton work well as the base. The clothing shouldn't fit too tightly, because what insulates is mainly the air between the layers. A footmuff (a cozy stroller bag, sometimes called a bunting bag in the US) in the stroller adds extra protection.

At the neck, even below freezing, skip the loose scarf and use a balaclava-style hat that warms the neck and ears at once, or a neck warmer that closes with a snap. In the first months you often need no separate neck protection at all, as long as the jacket or suit closes high enough. And in winter, too, the number alone doesn't decide: a clear frosty day in still air calls for fewer layers than a milder day with a stiff breeze.

Stroller, Carrier, Car, and Night

In the stroller, your baby needs noticeably more layers than anywhere else. They lie still, get no body heat from you, and sit fully in the headwind. In winter, a footmuff and a blanket help; in summer the opposite applies: air out the canopy and stroller regularly. A rain cover needs vents, otherwise the film fogs up and moisture builds underneath.

In the carrier, count your own body heat as a full layer. Your baby gets by with one layer less there than in the stroller. Do watch the parts that stick out: feet, lower legs, and hands are unprotected faster than you'd think.

In the car, the thick snowsuit comes off. Under thick clothing the harness sits too loose, because the material compresses and creates slack exactly where there should be none. Dress your baby in thin layers, buckle them in, and lay the jacket or a blanket over the fastened harness afterwards. On longer drives the interior also heats up, so a quick feel of the neck after getting out is worth it.

At night, what counts isn't the weather but the room temperature, and it can sit lower than many people assume: 16 to 18 °C (61 to 64 °F) is considered ideal. The basic setup stays the same at every temperature: a bodysuit, pajamas, and a sleep sack (called a sleeping bag in the UK and Australia) on top rather than a blanket, since it can't slip. A hat doesn't belong in bed at any temperature, because babies regulate their warmth through the head. Which combination suits which room temperature is something we break down in the article on dressing for the night.

Materials

Natural fabrics like cotton, wool-silk, or boiled wool are skin-friendly and breathable. Synthetics directly on the skin, by contrast, trap moisture, so your baby sweats despite thin clothing. Expensive specialist clothing isn't necessary; good fabrics are.

Pieces with snaps or zippers are practical, because they let you change individual layers without changing your child completely. Out and about, a change of clothes always belongs in the bag. Which pieces you really need and how to combine them into a wardrobe that covers any weather is something we've put together separately.

Checking Your Baby's Neck

Checking your baby's neck is the best indication of the right temperature. Place two fingers on the back of the neck: warm and dry means the clothing is right. Sweaty means one layer too many, cool means one layer too few. Hands and feet, by contrast, are naturally cooler and therefore not a reliable indicator; circulation in the extremities isn't fully developed yet in babies. Good moments for the check are after a walk, after a car ride, and before sleep.

Common Questions

• How can I tell if my baby is cold?
  If the skin is pale or cool, particularly around the neck, your baby needs an extra layer.
• Can my baby be dressed too warmly?
  Yes. Overheating is actually more dangerous than being a little cold. The signs are sweating, reddened skin, or restlessness.
• Does my baby need a hat indoors?
  No. A hat is outdoor clothing. It has no place in heated rooms or in bed.
• What should I do when we come inside?
  Take the outer layer off as soon as you enter a heated room, the bus, or the car. Those switches are exactly what layering is made for.

With a little practice, you develop a good sense of what your own child needs. If you want it down to the degree, the Wetterbaby app calculates the daily recommendation, tailored to the weather, location, and age of your child, with wind, feels-like temperature, and the UV index.