For the majority of people it is about common sense - staying cool, drinking plenty of water to maintain hydration, and avoiding sunburn. However, some groups can be particularly vulnerable and at much greater risk of harm, especially those with underlying heart and lung conditions, older people, babies and young children.
Looking out for people in these groups is important while most of England swelters under high temperatures.
The top ways for staying safe when the heat arrives are to:
- close curtains on rooms that face the sun to keep indoor spaces cooler and remember it may be cooler outdoors than indoors
- drink plenty of water as sugary, alcoholic and caffeinated drinks can make you more dehydrated
- never leave anyone in a closed, parked vehicle, especially infants, young children or animals
- try to keep out of the sun between 11am to 3pm
- take care and follow local safety advice, if you are going into the water to cool down
- walk in the shade, apply sunscreen and wear a hat, if you have to go out in the heat
- avoid physical exertion in the hottest parts of the day
- wear light, loose fitting cotton clothes
- make sure you take water with you, if you are travelling
- Video report by ITV Anglia's Sarah Byrd
With the heatwave continuing well into the week Public Health England has issued a warning.
People are being urged to keep an eye on relatives and neighbours who may be struggling with the sweltering conditions.
More than 7,000 calls were made to the East of England Ambulance service over the weekend - that is over a thousand more than normal.
The weekend's hot weather contributed to more than 7,000 emergency calls to the region's ambulance service.
The East of England Ambulance trust has issued a series of warnings over the past few days urging people to take care as temperatures soared to around 30 degrees.
But call operators were still kept busy with calls about a number of hot-weather-related problems from sunburn to breathing difficulties.
Rail passengers have been told the hot weather will cause disruption and cancellations to today's schedule.Read the full story ›
The temperature reached more than 31°C (88°F) in the Anglia region during Sunday afternoon beating Saturday and making it the hottest day of the year so far.
The heatwave is expected to continue into Monday when it could get even hotter.
The hottest place in the Anglia region on Sunday was Cavendish in Suffolk where the thermometer tipped 31.4°C (88.5°F). The UK's hottest location was the Hampton area of south west London at 32.1°C (89.8°F).
The average maximum temperature for a day in mid June in East Anglia is 20°C
Maximum temperatures in the Anglia region on Sunday 18 June 2017
- 31.4°C in Cavendish, Suffolk
- 31.1°C in Santon Downham, Suffolk
- 30.7°C in Marham, Norfolk
- 30.1°C in Cambridge
- 29.9°C in Wittering, Cambridgeshire
- 29.8°C in Andrewsfield near Braintree, Essex
- 29.8°C in Wattisham, Suffolk
- 29.8°C in Woburn, Bedfordshire
- 29.7°C in Northampton
- 29.7°C in Harpenden, Hertfordshire
- 29.7°C in Bedford
- 29.5°C in Holbeach, Lincolnshire
- 28.5°C in Stowe, Buckinghamshire
- 27.7°C in Shoeburyness, Essex
- 25.5°C in Cromer, Norfolk
Thousands of people descended on Clacton to make the most of the heatwave and a new Beside the Seaside festival.
After two successful years of holding a weekend event, this year it's being split to allow Harwich to also benefit from visitors later in the summer.
The festival coincided with a free day out for families of members of the armed forces and emergency services at the pier.
The East of England Ambulance service says its been inundated with calls this weekend as the heatwave continues.
Paramedics are urging people - especially the young and elderly to stay in the shade and remain hydrated as temperatures hover around 30C with even hotter weather forecast for Monday.
Saturday was the hottest day of the year as temperatures in the Anglia region topped 29°C but it's likely to be even hotter on Sunday.Read the full story ›
It was the hottest day of the year so far with a scorching temperature of above 34°C and the September day in more than 100 years.Read the full story ›
Britain has had its hottest September day since 1911.
The temperature at Gravesend in Kent reached 34.4°C also making it the hottest day of 2016.
The highest temperature reached in the Anglia region was 32.1°C recorded in Thurleigh in Bedfordshire and Writtle in Essex.
It's the hottest day of the year with 34.4 °C recorded at Gravesend. This makes it the warmest September day since 1911 #heatwave
The highest September temperature ever recorded in the Anglia region was 34.6°C at Raunds in Northamptonshire on 8 September 1911.