Parts of the United Kingdom are set to experience temperatures hotter than the Caribbean island of Barbados due to an upcoming heatwave. The warmest regions could see temperatures reaching up to 32C, with the rest of the country gradually climbing into the high 20s by the end of the week.
Forecasters predict that some areas in the south and south-east of England will enter heatwave conditions by Saturday, June 20, expanding more widely by Sunday, June 21. Additionally, southern regions in the UK may reach temperatures of 30C by Friday, June 19.
The definition of a heatwave, according to the Met Office, involves three consecutive days with maximum temperatures meeting or surpassing the specific heatwave temperature threshold. This threshold varies across different regions, ranging from 25C in Scotland, Northern Ireland, Wales, and parts of the south-west of England to 28C in London and its surrounding areas.
Comparatively, Barbados is expected to experience temperatures between 26C and 30C on Sunday. The Met Office also forecasts even higher temperatures for the south and south-east of England, possibly reaching 33C in certain areas on Monday.
Despite the high temperatures, intermittent spells of rain, particularly in northern and western areas, and a slight possibility of thunderstorms in the south-east of England are anticipated.
A yellow heat health alert has been issued by the UK Health Security Agency for specific regions from Wednesday, June 17, until Monday, June 22, indicating a higher risk to vulnerable individuals and an increased demand for healthcare services. The alert also warns of the potential for indoor environments to become excessively warm and an uptick in water-related incidents.
Gregory Wolverson, the deputy chief forecaster at the Met Office, highlighted the contrasting weather patterns expected this week, with unsettled conditions in the north-west and rising temperatures in the south and east. As the weekend approaches, more settled conditions are projected with temperatures likely to meet heatwave thresholds across southern and eastern England.
While the temperatures may soar, not all areas will experience constant sunshine due to the presence of more cloud cover. Thunderstorms may also develop, particularly in the afternoons, bringing heavy showers and localized impacts.
Beachgoers are advised to be cautious of sea-surface temperatures, which are not as warm as mid-summer levels. This warning comes after 15 fatalities occurred due to water-related incidents during the previous hot spell in May and June.