The Met Office has revealed the exact date UK temperatures are set to peak during the upcoming heatwave, with the mercury expected to hit 34C in parts of England. The scorching conditions are forecast to arrive at the start of next week, prompting health warnings from authorities.
Heatwave Forecast Details
Temperatures could reach as high as 34C in England, the Met Office has said, with many areas expected to surpass their respective heatwave thresholds. The UK Health Security Agency (UKHSA) has issued an amber heat-health alert for the East of England, London, South East, and South West, effective from 12pm on Thursday, June 18, until 8pm on Tuesday, June 23. A less severe yellow alert has been issued for the East Midlands and West Midlands.
Regional Temperature Breakdown
In Greater Manchester, temperatures are expected to reach 25C on Friday, dropping to 21C on Saturday, then rising to 26C on Sunday and 27C from Monday to Wednesday. This surpasses the region's heatwave threshold for more than three consecutive days.
Deputy Chief Forecaster Gregory Wolverson said: "Some areas in the south and southeast of England are likely to see heatwave criteria met over the weekend, with the potential for temperatures to reach the low 30s in the warmest locations." He added that the headline maximum temperatures are: 32C on Friday in East Anglia, 28C on Saturday, 32C in the south and southeast on Sunday, and the potential for 34C in the same areas on Monday.
Peak Temperature Day
The hottest day is expected to be Monday, June 22, when the Met Office has said it could reach 34C or higher, alongside noticeably humid conditions. "Temperatures are expected to reach the high 20s Celsius quite widely, with the potential for 32C to be reached in the south of England on Sunday and potentially 34C or higher on Monday. Conditions will remain noticeably humid," the Met Office stated.
Heatwave Definition
In the UK, a heatwave is officially defined as a location recording at least three consecutive days with daily maximum temperatures meeting or exceeding the heatwave temperature threshold. This threshold varies by county, reflecting the diverse climate across the UK. Many areas are likely to meet these criteria.
Water Safety Warning
The Met Office, in collaboration with the RNLI, has warned people to be mindful when visiting the seaside during the heatwave, as sea-surface temperatures remain cold. Samantha Hughes, National Water Safety Partner at the RNLI, said: "With warmer weather approaching, it's important to remember that the water is still cold. Entering it unexpectedly can lead to cold water shock." She advised floating to live if struggling in the water and always choosing a lifeguarded beach.
Thunderstorm Risk
Mr. Wolverson noted that while temperatures may be high, there could be more cloud than during the late May heatwave. "Couple this with fairly high humidity, and it may feel rather oppressive at times. There is also a chance of thunderstorms developing in places, which could bring heavy downpours and localised impacts."
There is currently a 40% chance of exceeding the UK June maximum temperature record of 35.6C, set in 1957 and 1976, and a lower chance of exceeding the record for Wales.
