The UK Health Security Agency (UKHSA) has issued a warning to Brits ahead of what is expected to be the fourth heatwave of summer.
Yellow heat health alerts have been issued across six regions in England as temperatures are set to top 30C.
The UKHSA has warned that climbing temperatures could lead to "serious health outcomes", with Brits urged to take precautions while enjoying the sunshine.
The heat health alert affecting six regions in England comes into effect at 12pm on Monday (August 11) until 6pm on Wednesday (August 13). It covers Yorkshire and the Humber, East Midlands, East of England, London, the South East and South West.
The alert warns that significant impacts are possible across health and social care services due to the high temperatures.
Anya Gopfert, Consultant in