Britain is set to experience its hottest day of the year so far on Wednesday, with the mercury expected to peak at a sizzling 26C in some regions. A striking weather map reveals that a band of high pressure sweeping northwards from the south will drive temperatures significantly above the early April average, which typically sits in the mid-teens.
Heat Concentrates in the Southeast
Forecasters anticipate that the highest temperatures will be felt across the Southeast of England this afternoon, particularly in areas including Greater London, Essex, and Surrey. These readings could even surpass those expected in warmer climates like Athens and Cairo today, marking a notable spell of very warm weather for early April.
Paul Gundersen, Met Office chief forecaster, commented on the unusual conditions, stating: “We’re seeing a brief but notable spell of very warm weather for early April, with temperatures more typically associated with late spring or early summer. This could be the warmest spell at this point in April since 2020.”
Not a Universal Heatwave
However, the warmth will be short-lived and unevenly distributed. While central and southeast England will bask in temperatures of at least 20C, enhanced by lighter winds that make it feel even warmer, other parts of the UK will experience cloudier and cooler conditions. Northern Ireland and northwest Scotland are forecast to have outbreaks of rain at times, with temperatures remaining lower.
The Met Office also clarifies that this brief spell does not qualify as an official heatwave, which requires temperatures to meet or exceed specific thresholds for each UK county for at least three consecutive days.
Hay Fever Warnings Issued
The surge in temperatures brings challenging conditions for hay fever sufferers. Forecasters have issued warnings of “very high” pollen levels across much of England and Wales over the next few days, with Scotland and Northern Ireland also experiencing “high levels” that are expected to decrease later in the week.
Last month, as temperatures began to rise at the start of spring, many took to social media to express frustration over ash pollen, particularly across southern counties. The Met Office typically advises those affected to take preventive measures, such as wearing wraparound sunglasses, masks, or wide-brimmed hats to reduce pollen exposure, and showering and changing clothes after being outdoors.
A Rapid Temperature Drop Ahead
Despite the midweek warmth, a marked drop in temperatures is forecast for later this week, with more unsettled conditions developing. In some areas, daytime temperatures could fall by around 10°C between Wednesday and Thursday, highlighting the transient nature of this warm spell.
This follows Tuesday’s warm conditions, where beaches were busy, such as in St Ives, Cornwall, and temperatures reached 24.8C on the island of Anglesey in north Wales. Today, eastern areas are likely to be even warmer, as depicted on the Met Office’s weather map, which pinpoints the hottest regions.
