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Dressing your baby in summer

In summer, overheating is a bigger risk than being cold. Babies can't regulate their temperature well yet, sweat less effectively and get too hot quickly in blazing sun. The good news: summer clothing is wonderfully simple – often a single thin layer is enough.

In short: thin, airy, light-coloured fabric – and above all shade instead of direct sun. Check the neck: warm & dry is just right, sweaty means one layer off.

Chart: summer clothing by temperature

TemperatureRecommendation
from 28 °CDiaper only or a thin short-sleeve bodysuit · sun hat with neck flap · thin muslin cloth for shade
24–27 °CShort-sleeve bodysuit · thin trousers or a light romper · sun hat · thin socks
20–23 °CShort- or long-sleeve bodysuit · light trousers/romper · thin hat for outings

Don't forget sun protection

Babies under one year don't belong in direct sun. Rely on shade, light long-sleeved clothing made of tightly woven fabric and a hat with a neck flap. Sunscreen is only the second choice and, for the first months, meant only for small uncovered areas – when in doubt, ask your paediatrician or midwife.

Stroller & car in summer

Never cover the stroller with a blanket – heat builds up underneath. Use a breathable sun canopy. In the car, don't park the seat in blazing sun and check the buckle and seat for heat before setting off. On hot days feed more often or – depending on age – offer water.

🧮 Open the clothing calculator

Frequently asked questions

What should my baby wear at 30 degrees?

A thin short-sleeve bodysuit or just the diaper, sun hat with neck flap, shade. Avoid the midday sun, feed/offer drinks more often.

Does my baby need socks in summer?

Thin socks or bare feet are enough. The neck check against overheating is what counts.

How do I notice my baby is too hot?

Sweaty, hot neck/chest, flushed skin, restlessness. Then remove a layer, move into the shade, offer fluids.

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 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.