When the mercury climbs above 30C, the UK doesn't just get uncomfortable — it gets dangerous, especially for the smallest members of the family. Babies and young children heat up more quickly than adults and sweat less, making it harder for them to cool down. With temperatures in parts of the UK soaring above 30C and London facing potential record highs of 35C, knowing how to protect your child is not just a matter of comfort, but of safety.
Here are the basics. Children are more vulnerable to heat than adults because their bodies produce more heat relative to their size, and they have a smaller surface area to sweat from. The NHS advises that babies under six months should be kept out of direct sunlight completely, and sunscreen is not recommended for them. For older children, the key is a combination of hydration, sun protection, clothing, and timing.
“Essential tips for protecting babies and children during UK heatwaves.”
Getting kids to drink enough water can be a struggle. The BBC suggests using foods with high water content, such as watermelon, oranges, salad, ice cream, jelly, and soup. Frozen lollies made from plain water or very diluted fruit juice are a good option from 12 months old. Breastfed babies get all the water they need from breast milk but may want to feed more frequently; formula-fed babies can be given a little cooled boiled water alongside their usual feeds.
Sun protection is critical. The advice is to use a sunscreen with at least SPF 30 and a four-star rating, applied 30 minutes before going outside and reapplied every two hours. Pay attention to often-missed spots: tops of feet, ears, neck, and shoulders. Once-a-day sunscreens “overpromise” and should not be relied upon, say experts. Even water-resistant formulas need reapplication after swimming, towel drying, or sweating. For babies under six months, keep them entirely out of direct sun.
Keeping children out of the sun between 11am and 3pm is the simplest way to stay safe. If you do go out, use a parasol or sunshade, but never cover a pram or pushchair with a muslin cloth or blanket — even in the shade — because it can trap heat and restrict airflow. Loose-fitting, dark-coloured clothing offers better protection, and a paddling pool can be a great way to keep kids cool (look for ones with sun shades or sprinklers, as highlighted by The Independent).
Why does this matter for UK readers? The UK is experiencing more frequent and intense heatwaves. The Met Office has issued amber extreme heat alerts, with London bracing for temperatures up to 35C — potentially breaking the June record of 35.6C set in 1957 and 1976. Even overnight, so-called “tropical nights” could see temperatures of 28C at 10pm, making sleep difficult and increasing heat stress. Understanding how to protect children is becoming an essential part of British summer life.
Q: When is the hottest part of the day and when should I keep my child indoors? The hottest part of the day is typically between 11am and 3pm. The easiest way to keep children safe is to keep them out of the sun entirely during these hours.
Q: Can I use sunscreen on my baby? Sunscreen is not recommended for babies under six months because their skin is very sensitive. They should be kept out of direct sunlight completely. For older children, use at least SPF 30 with a four-star rating.
Q: What should I do if my child won't drink water? Try water-rich foods like watermelon, oranges, cucumber, or soup. Frozen lollies made from plain water or diluted fruit juice (from 12 months) are also effective. Breastfed babies do not need extra water but may feed more often; formula-fed babies can have a little cooled boiled water.
What happens next? The UK heatwave is expected to continue, with London potentially facing a record-breaking week. The Met Office and UK Health Security Agency have issued amber alerts, meaning heat-related illnesses are likely. Parents should stay updated on local temperature forecasts and follow NHS and Met Office guidance. As summers get hotter, these tips will remain relevant for years to come.