Stay Safe and Well in Hot Weather
As temperatures rise across London, the Royal Borough of Greenwich has set out a series of clear steps residents can take to reduce the risk of heat-related illness. The guidance focuses on preventing dehydration, heat exhaustion and more serious heatstroke, while also encouraging people to look out for neighbours who may be more vulnerable in extreme heat.
The advice comes as health experts continue to warn that extreme heat events are becoming more frequent in the UK, increasing pressure on health and care services during the summer months.
How to stay safe in the heat
Residents are advised to avoid direct sunlight during the hottest part of the day, typically between 11am and 3pm, when UV levels are strongest. Staying hydrated is essential, with regular water intake recommended even before feeling thirsty.
Those going outside are encouraged to seek shade where possible, wear lightweight clothing, and apply sunscreen regularly. It is also advised to limit strenuous physical activity during peak temperatures, particularly for those working outdoors or travelling across the borough.
Inside the home, keeping curtains closed in sun-facing rooms can help maintain cooler indoor temperatures, while using cooler community spaces where available may provide additional relief during heatwaves.
Protecting those most at risk
Older people, infants, and individuals with long-term conditions are more likely to suffer from heat-related illness and should be checked on regularly during hot weather. Carers, families and neighbours are encouraged to stay in contact, particularly during prolonged periods of high temperatures.
Symptoms of heat exhaustion can include dizziness, nausea, headaches and confusion. If these occur, immediate cooling and medical advice should be sought.
Getting help and support
Anyone feeling unwell during hot weather should contact their GP surgery for advice or use NHS 111 for urgent non-emergency support.
In emergencies where someone shows signs of heatstroke—such as confusion, collapse, or loss of consciousness—call 999 immediately.
Residents can also access wider support and emergency planning guidance through the Royal Borough of Greenwich “Be Prepared” resources, including advice on keeping emergency contacts, medications, and essential supplies readily available during extreme weather events.
Find a cool space near you
If you're out and need to seek shelter from the heat - or are concerned about a rough sleeper - we have 6 cool spaces available.
The Woolwich Centre Library (35 Wellington Street, SE18 6HQ)
The Eltham Centre Library (Archery Road, SE9 1HA)
Woolwich Service Users Project (WSUP) Day Centre (107 Brookhill Road, SE18 6BJ)
Greenwich Homeless Project Day Centre (360 Middle Park Avenue, SE9 5QH)
999 Club Day Centre (21 Deptford Broadway, SE8 4PA)
Plumstead Library (232 Plumstead High Street, SE18 1JL)
