Sun Safety for Babies: Sunscreen, Shade, and Heat in the UK

UK summers can be surprisingly intense — and baby skin, thinner and less melanin-rich than adult skin, burns much faster. Here's how to keep your baby safe in the sun.

Under 6 months: shade and clothing, not sunscreen

The NHS and Cancer Research UK recommend that babies under 6 months should be kept out of direct sunlight altogether — particularly between 11am and 3pm when UV is strongest.

At this age, sunscreen is not recommended as the primary protection (the chemicals can be absorbed more readily through young skin). Instead:

• Shade — prams with sunshades, trees, parasols, indoor-outdoor play that stays out of direct sun
• Protective clothing — lightweight, long-sleeved clothing, wide-brimmed hat with neck shade (minimum UPF 30 fabric)
• Avoid peak hours — keep outdoor time for early morning or late afternoon in summer

Over 6 months: add sunscreen

From 6 months, sunscreen can be used on exposed skin. Apply before going outside and reapply every 2 hours (more often if swimming or sweating).

What to look for in a baby sunscreen:

• SPF 50 (or SPF 50+)
• 5-star UVA protection (4 or 5 stars is the UK standard for broad-spectrum)
• Formulated for babies and children — these tend to use mineral (physical) filters (zinc oxide, titanium dioxide) rather than chemical filters, which are gentler on sensitive skin

Popular UK options: Riemann P20 Kids, Ultrasun Family (mineral), Bondi Sands Kids, Soltan Kids, Aldi Lacura Baby — most UK pharmacy own-brand baby SPF50s are reliable.

Apply generously — most people apply about a quarter of the required amount. For a young baby, a palmful covers the exposed areas. Don't forget: ears, back of the neck, back of the hands, and the feet if in a pushchair with legs out.

Clothing in the sun

UPF (Ultraviolet Protection Factor) clothing is the gold standard — swimwear and sun tops with a UPF 50+ rating offer better protection than most regular fabrics (a white cotton T-shirt has roughly UPF 10 when dry).

What to look for:

• Wide-brimmed hat (cap doesn't protect ears or neck)
• Long-sleeved rash vest or swim top for water play
• Lightweight, tightly woven fabric for general wear

Many baby and toddler swimming suits now include long sleeves and legs with UPF 50+ — far more practical than applying sunscreen to a wriggling wet child.

Keeping cool: heat safety

Young babies cannot regulate their temperature as effectively as adults. Overheating is a genuine risk.

Signs of overheating:

• Sweaty, damp hair at the nape of the neck
• Flushed, red skin
• Rapid breathing
• Irritability, unusual crying
• Hot to the touch (back of neck is the most reliable indicator)

In a pram/buggy:

• Do NOT drape a muslin or blanket over the pram hood — this can trap heat and raise the internal temperature dangerously. Use purpose-made pram sun shades or parasols.
• Position pram in shade rather than full sun
• Use a pram fan if needed
• Stop and check baby frequently

In the car:

• Car interiors heat up extremely fast — never leave a baby in a parked car, even briefly
• Use a rear-window sun blind
• Check baby is not too hot during the journey

Dressing for heat: In hot weather (25°C+), a vest or just a nappy may be all baby needs. Add a hat for sun. The key indicator is not the air temperature but baby's skin — the back of the neck should feel warm but not hot or sweaty.

Cold water: Paddling pools, cool baths, or cool damp flannels on the neck and wrists help in heat. Ensure paddling pool water is in the shade and water isn't too cold (should be tepid, not cold, to avoid shock).

Heat exhaustion and heatstroke

Heat exhaustion: Baby is very hot, drowsy, pale and clammy, or showing signs of dehydration (reduced wet nappies, dry mouth). Move to shade, offer feeds (breast milk or cooled boiled water over 6 months), use a fan and cool flannel. Contact your GP or 111.

Heatstroke: Hot but not sweating, red and dry skin, high temperature, altered consciousness. Call 999. This is an emergency.

Vitamin D vs sun exposure

The NHS recommends all babies take vitamin D supplements rather than relying on sun exposure — keeping babies out of direct sun is compatible with getting adequate vitamin D through drops. See our vitamin D guide for details.