Heat health alerts have been elevated to amber in numerous regions across the UK ahead of the fourth heatwave of the year. The UK Health Security Agency (UKHSA) has issued amber heat health alerts for the East Midlands, East of England, London, and South East, while yellow alerts are in effect for the South West, West Midlands, and Yorkshire and The Humber.
These alerts will be active from 9 am on Wednesday, July 29, until 9 am on Thursday, July 30. Notably, there are currently no alerts issued for the North East or North West of England, Wales, Scotland, or Northern Ireland.
The amber alert signifies the likelihood of significant impacts on health and social care services due to high temperatures, potentially leading to increased fatalities, particularly among individuals aged 65 and over or with underlying health conditions. Younger age groups may also be affected. The alert also cautions about the potential for extreme heat to impede service delivery and cause temperatures in care settings to surpass recommended safety levels.
Moreover, staffing challenges could arise due to external factors like transportation disruptions, and power demand might exceed capacity. Sectors such as travel could face disruptions, and there is a heightened risk of water-related incidents, including cold water shock and drowning.
Conversely, yellow alerts suggest minor effects on health and social care services, with vulnerable individuals likely to seek more healthcare assistance and face an increased risk to life. Indoor environments may become excessively warm, and water-related incidents could rise as well.
The weather forecast indicates temperatures climbing into the mid-to-high 20s this week, with the south and southeast regions expected to experience very warm to hot conditions by midweek. If local temperature thresholds are met for three consecutive days, another heatwave could be recorded. So far in 2026, there have been three distinct heatwaves in May, June, and July.
Met Office Deputy Chief Forecaster Gregory Wolverson stated that while this heatwave will be brief, temperatures will rise rapidly, particularly in the southeast. By Wednesday, some areas could see temperatures in the mid-30s Celsius, potentially meeting official heatwave criteria by Thursday in parts of the southeast. Elsewhere, the weather will be more changeable, with cooler and unsettled conditions arriving sooner from the north and west, accompanied by a mix of sunshine and showers. Northern areas might experience heavier showers with a slight risk of isolated thunderstorms throughout the week.
