During a UK heatwave, the most effective cooling strategies focus on hydration, clothing, and environmental control. Drink plenty of water throughout the day and avoid alcohol and caffeine, which increase dehydration [1][2][3]. Wear loose-fitting, light-coloured cotton or linen clothing and use wide-brimmed hats and sunglasses when outdoors [1][2].

Managing your home's temperature is critical. Keep curtains and blinds closed during the hottest parts of the day, especially on south-facing windows, and open windows only when outside air is cooler than inside—typically early morning or late evening [1][2][4]. Turn off non-essential lights and electrical appliances, as these generate additional heat [1]. Move to the coolest room in your house, particularly for sleeping, and use breathable cotton or linen bedding; cooling sheets in the fridge before bed can provide temporary relief [1][5][2].

For immediate body cooling, take cool showers or apply cool water to pulse points like your neck, wrists, and ankles [5][2]. If your home becomes unbearably hot, seek air-conditioned public spaces such as libraries, cinemas, shopping centres, or community cooling centres [1][2]. Avoid vigorous exercise between 11 a.m. and 3 p.m. when the sun is strongest, and eat lighter meals with high water content rather than heavy, hot foods [2].

Using a fan with ice in front of it can provide temporary cooling through evaporative effect, but this approach has limitations in humid conditions and should not replace proper ventilation [1][2]. Be alert to signs of heat exhaustion—dizziness, headaches, confusion, or cessation of sweating—and seek urgent medical help if these occur [2][3]. Check on vulnerable people, including the elderly and those with health conditions, who are at higher risk during heatwaves [1][3].