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By the Peanutbean parent · checked against CDC, NHS and AAP guidance · how we fact-check

Baby sun safety: sunscreen, shade, and keeping little ones cool

Last verified: July 18, 2026

Illustration of a sun shade over a pram with a small sun in the corner

The short answer: keep babies under 6 months out of direct sunlight altogether, using shade, a pram sunshade, and light clothing rather than sunscreen. From 6 months, add sunscreen (at least SPF 30 with UVA protection) alongside a wide-brimmed hat and covering clothes. Avoid the strongest sun hours, reapply sunscreen every 2 hours, and never cover a pram with a blanket, since that traps heat.

Under 6 months: shade first, sunscreen barely at all

Babies under 6 months old should be kept out of direct sunlight, particularly in summer and between 11am and 3pm, when the sun is strongest (NHS: Keeping your baby safe in the sun). The AAP frames it the same way: keep babies younger than 6 months out of direct sunlight, using shade from a tree, umbrella, or the stroller canopy (AAP: Sun Safety).

On sunscreen for this age group, the two organisations differ slightly, and we would rather show you both than pick one and hide the disagreement. The NHS states sunscreen is not recommended for babies under 6 months (NHS). The AAP takes a more permissive line for situations without other options: for babies younger than 6 months, use sunscreen on small areas of the body, such as the face, if protective clothing and shade are not available (AAP). Both agree that shade and covering up are the real first line of defence, sunscreen is the fallback, not the plan.

From 6 months: sunscreen joins the routine

Once your baby is 6 months or older, apply sunscreen with a sun protection factor (SPF) of at least 30, with both UVA and UVB protection, to any skin not covered by clothing (NHS). Many brands sell formulas made specifically for babies, which are less likely to contain irritating additives (NHS).

The AAP’s threshold is a touch lower on paper: a broad-spectrum sunscreen with an SPF of at least 15, up to 50 (AAP). In practice, SPF 30 or higher, applied generously, covers both recommendations comfortably.

Application details that matter more than the exact SPF number:

  • Apply 15 to 30 minutes before going outside, so it has time to absorb (AAP; NHS).
  • Use plenty of it. Most people apply too little, which cuts the real protection well below the number on the bottle (NHS).
  • Reapply every 2 hours, and immediately after swimming, sweating, or towel drying, even with “water resistant” products (NHS; AAP).
  • Watch the eyes. If your baby rubs sunscreen into their eyes, wipe eyes and hands clean with a damp cloth. If it irritates their skin, try a different brand, or one based on zinc oxide or titanium dioxide, which also work well on sensitive spots like the nose and ears (AAP).

Clothes, shade, and timing beat sunscreen

Sunscreen is one layer of protection, not the whole plan. Both sources put clothing and shade first:

  • A wide-brimmed hat or one with a flap to shield the face, ears and the back of the neck (NHS; AAP).
  • Loose, lightweight, close-woven clothing that covers the body, since a tighter weave blocks more UV than a loose one (NHS; AAP).
  • Sunglasses, ideally with wraparound coverage or a UV rating (NHS).
  • Time it around the sun’s peak. In the UK, that is 11am to 3pm from March to October; the AAP marks the window slightly wider, 10am to 4pm (NHS; AAP).
  • Do not cover a pram or pushchair with a blanket to block the sun. It feels protective but traps heat instead, and can lead to overheating. Use a proper parasol or sunshade attachment, and check on your baby regularly (NHS).

Fluids in hot weather

Heat raises fluid needs even for milk-fed babies. Fully breastfed babies do not need extra water, but they may want to feed more often in hot weather. Formula-fed babies can have a little extra cooled boiled water alongside their usual milk feeds (NHS). Our drinking water guide covers the exact rules by age.

If sunburn happens anyway

For a baby under 1 year old, call the doctor right away if sunburn occurs (AAP). For comfort in the meantime: cool the skin with cool water, offer extra fluids, and use pain relief appropriate for age (acetaminophen/paracetamol for babies 6 months or younger; either paracetamol or ibuprofen once older than 6 months) (AAP). Keep your baby out of the sun entirely until the redness has fully gone (NHS).

When to call your doctor

Beyond a sunburn on a baby under 1, get medical help if:

  • your baby seems unusually sleepy, floppy, or unwell in hot weather (possible signs of heat exhaustion)
  • sunburn blisters, swells badly, or comes with a fever
  • your baby is showing signs of dehydration, such as noticeably fewer wet nappies

And as always: your own concern is reason enough to ask.

Keep reading

Sources

Peanutbean provides general information for educational purposes only. It is not medical advice. Every baby develops at their own pace. Always talk to your pediatrician about your child’s health.

Common questions

Can I put sunscreen on my baby if they are under 6 months old?

The NHS says sunscreen is not recommended under 6 months, and babies that age should be kept out of direct sunlight entirely. The AAP takes a slightly softer line: if shade and protective clothing are not available, sunscreen on small exposed areas like the face is an option, ideally after checking with your pediatrician. Shade and covering up come first either way.

What SPF should my baby's sunscreen be?

The NHS recommends at least SPF 30 with 4-star UVA protection for babies over 6 months. The AAP suggests a broad-spectrum SPF of at least 15, up to 50. Either threshold works well; the more important habit is applying enough and reapplying every 2 hours.

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Peanutbean provides general information for educational purposes only. It is not medical advice. Every baby develops at their own pace. Always talk to your pediatrician about your child's health.