Why Babies Need Special Sun Protection and How to Protect Them Right
Children's skin is sensitive, especially in the first year. Learn how to protect your baby from UV radiation and what the UV index has to do with it.
Written by Wetterbaby Editorial Team on May 6, 2025
A baby can get a sunburn on a mild day in May, at barely 22 °C (72 °F). The UV load doesn't depend on how warm it feels, and baby skin has little to counter it with. That's why effective sun protection in the first years isn't an extra, but a necessity.
Why Baby Skin Is So Sensitive
Baby skin is considerably thinner than adult skin, so UV radiation penetrates deeper. The pigment cells that later shield the skin aren't fully matured yet, and melanin, the natural protection, is barely present. The whole defense system against UV damage builds up over years. The consequence is serious: a sunburn in childhood can significantly raise the risk of skin cancer in adulthood.
Avoiding Direct Sun
In the first year, your baby should stay out of direct sunlight entirely if at all possible. The best protection consists of shade and suitable clothing, complemented by a sun hat; all three work better than any cream. The same applies in the stroller and on the balcony: canopy down, long sleeves and long pant legs, ideally in densely woven fabric with UPF 50+.
Sunscreen: Supplementary and Done Right
From 6 months on, you can apply sunscreen as a supplement, meaning on top of shade and clothing, never as a replacement, and only on the small areas that can't be covered. Use a mineral, fragrance-free cream with SPF 50+ and stated UVA and UVB protection. And reapply, especially after bathing or sweating.
When Caution Matters Most
The key is knowing when the load is high. From a UV index of 3, your baby needs protection, and that value can be reached on cool or lightly overcast days too. The Wetterbaby app shows, alongside the weather, the UV index for your location. That makes it easy to judge in the morning whether shade and a sun hat are especially important today. Sun protection thus belongs in everyday life, not just on a beach vacation.
Source:
American Academy of Pediatrics, Sun Safety: Information for Parents About Sunburn & Sunscreen
NHS, Keeping your baby safe in the sun
Cancer Council Australia, Sun protection and babies (0-12 months)
