Sunburn is painful, it ages skin, and in childhood it matters for long-term health in a way that is not always appreciated. The epidemiological data is clear: severe sunburn in childhood, particularly in the first decade of life, substantially increases the risk of melanoma and other skin cancers in adult life. The UK has some of the highest melanoma rates in Europe.
The good news is that prevention is straightforward, and most UK parents who know the risks are well motivated to apply it. The challenge is that UV levels in the UK are higher than many people expect, and sunburn can happen on overcast days in ways that catch families by surprise.
Healthbooq (healthbooq.com) covers outdoor safety and child health through the early years, including sun protection guidance aligned with NHS and Cancer Research UK recommendations.
Babies Under Six Months
The NHS recommends keeping babies under six months old out of direct sunlight. Their skin contains less melanin (the pigment that provides some natural UV protection) and is thinner and more permeable than older children's skin.
Sunscreen is generally not recommended for babies under six months because their skin may absorb more of the chemical components, and because there is insufficient safety data for this age group. The solution is avoidance: shade, UV-protective clothing (long sleeves, wide-brimmed hat), and the pram hood.
On very hot days, this also means managing temperature: a pram cover can trap heat and cause overheating; use of shade plus light, breathable clothing is preferable to covering the pram.
From Six Months
From six months, sunscreen can be used appropriately as one component of sun protection, combined with other measures rather than as a standalone solution.
SPF 50 or 50+ with broad-spectrum protection (covering both UVA and UVB) is recommended. UVA causes skin ageing and contributes to skin cancer; UVB causes burning. Both are harmful. Products marked with the EU star rating system provide an indication of UVA protection; a 4-star rating or higher is recommended.
Apply sunscreen 30 minutes before going out, and reapply every two hours (more frequently after swimming or towelling). Most people, adults included, apply significantly less sunscreen than is needed for the stated SPF protection. The required amount for a toddler is roughly a teaspoon per body area.
Clothing provides reliable UV protection; a UV-protective (UPF 50+) swim shirt is valuable for children who will be in and out of water. A wide-brimmed hat with a neck flap is more protective than a baseball cap. Sunglasses with UV-protective lenses protect the eyes.
UK UV Levels and Timing
UV levels in the UK that are high enough to cause sunburn occur between April and September. The peak risk hours are 11am to 3pm. Cloud cover does not eliminate UV; up to 80 per cent of UV can penetrate light cloud. Reflection from water, sand, and pale surfaces increases UV exposure.
The Met Office UV index is included in weather forecasts. A UV index of 3 or above indicates that sun protection is needed. In the UK, the index can reach 6 to 7 on sunny summer days.
Shadow length is a practical guide: if your shadow is shorter than your height, the sun is high enough to cause burning.
If Sunburn Occurs
Move the child out of the sun immediately. Cool the burned skin with cool (not cold) water for 10 to 20 minutes. Do not apply ice, which can cause frostbite. After cooling, apply a fragrance-free moisturiser or aloe vera gel to soothe the skin. Do not apply butter or oil.
Paracetamol or ibuprofen at appropriate doses manages the pain and ibuprofen also reduces the inflammatory component of the burn.
Give plenty of fluids, as sunburned skin loses more fluid.
Seek medical advice if the sunburn covers a large area, if there are blisters over a large area, if the child is very young (particularly under 12 months), if the child has a high fever or signs of heatstroke (confusion, no sweating despite heat, very high temperature), or if you are concerned.
Heatstroke
Heatstroke is distinct from sunburn and is a medical emergency. It occurs when the body temperature rises to dangerous levels and the cooling mechanisms fail. Signs include a very high temperature (above 40 degrees Celsius), confusion or unusual behaviour, hot and dry skin (not sweating), rapid breathing, and loss of consciousness.
If heatstroke is suspected, call 999 immediately, move the child to a cool environment, and apply cool wet cloths to the skin.
Key Takeaways
Babies under six months should be kept out of direct sun entirely, as their skin cannot protect itself effectively and sunscreen is generally not recommended on young infants. From six months, a broad-spectrum SPF 50 sunscreen combined with protective clothing, shade, and avoiding the midday sun are the standard recommendations. A single severe sunburn in childhood significantly increases lifetime skin cancer risk. In the UK, UV levels are high enough to cause sunburn between April and September even on cloudy days, particularly between 11am and 3pm.
