The trigger level for the South East is 30°c on two or more consecutive days and 16°c during the night.
During a heatwave there are a few groups of people who are at higher risk of suffering from severe health effects. These include babies and very young children, older people, people with pre-existing medical conditions such as heart conditions, diabetes, respiratory or renal problem, Parkinson’s disease or severe mental illness.
Additionally, those on medications which affect renal function, sweating or make the skin more sensitive to sunlight also need to be particularly careful.
Advice to help people stay well during hot weather:
Stay out of the heat:
• Keep out of the sun between 11.00am and 3.00pm
• If you have to go out in the heat, walk in the shade, apply sunscreen and wear a hat and light scarf
• Avoid extreme physical exertion
• Wear light, loose-fitting cotton clothes
Cool yourself down:
• Have plenty of cold drinks, and avoid excess alcohol, caffeine and hot drinks.
• Eat cold foods, particularly salads and fruit with a high water content.
• Take a cool shower, bath or body wash
• Sprinkle water over the skin or clothing, or keep a damp cloth on the back of your neck
Keep your environment cool:
• Keeping your living space cool is especially important for infants, the elderly or those with chronic health conditions or who can’t look after themselves.
• Place a thermometer in your main living room and bedroom to keep a check on the temperature
• Keep windows that are exposed to the sun closed during the day, and open windows at night when the temperature has dropped
• Close curtains that receive morning or afternoon sun. However, care should be taken with metal blinds and dark curtains, as these can absorb heat – consider replacing or putting reflective material in-between them and the window space
• Turn off non-essential lights and electrical equipment – they generate heat
• Keep indoor plants and bowls of water in the house as evaporation helps cool the air
• If possible, move into a cooler room, especially for sleeping
• Electric fans may provide some relief, if temperatures are below 35°c
For more information on how to keep yourself and loved ones cool visit NHS Choices web pages