For those used to tropical temperatures and typhoons, warnings about England’s current short-lived heatwave may be thought unnecessary, but this is the advice which has been issued :-
• try to keep out of the sun between 11am to 3pm
• apply sunscreen of at least SPF15 with UVA protection
• wear UV sunglasses, preferably wraparound, to reduce UV exposure to the eyes
• wear light, loose-fitting cotton clothes, a hat and light scarf
• drink lots of cool drinks
• look out for others especially vulnerable groups such as older people, young children and babies and those with serious illnesses
• never leave anyone in a closed, parked vehicle, especially infants, young children or animals
https://www.gov.uk/government/news/heatwave-on-the-way