Temperatures will reach 25-28°C on Wednesday, and potentially 30°C by Friday and Saturday with very high pollen and UV levels across multiple parts of the country.
Marco Petagna, senior meteorologist at the Met Office, said: “Wednesday is probably going to be the day when we could start to reach the thresholds of 25 to 28 degrees, depending on where you are.
“Although the temperature will be reaching the criteria, we won’t reach an official heatwave until around Friday, to give the three consecutive days at those temperatures.”
What is the definition for a UK heatwave?
According to the Met Office, the UK heatwave threshold is met when a location records a period of at least three consecutive days with daily maximum temperatures meeting or exceeding the heatwave temperature threshold.
The threshold varies by UK county. The geographical differences reflect the differences in climate across the country.
The threshold temperatures have been calculated using the 1991-2020 climatology of daily maximum temperature at the mid-point of the meteorological summer (15 July).
“Temperatures are going to continue to climb as we go toward the end of the week, and certainly by Friday and Saturday, we could see 30 degrees, perhaps just nudging into the low 30s,” said Mr Petagna.
“At the weekend, we could just start to see humidity increasing along with nighttime temperatures, so it will be starting to become more uncomfortable at night.”
Although figures may be revised, for cities such as London, the BBC weather forecast is predicting up to a week of warm weather starting from Tuesday, and is replicated in Bristol, Leeds, Exeter, and Birmingham.
For multiple cities the weather is set to spike from Tuesday onwards (BBC)
“At this stage, it looks as though, certainly into next weekend, we should hold on to hot weather across the south of the UK and temperatures could again get into the low 30s in a few spots.
Looking ahead after next week, temperatures are set to be slightly but remain in the high 20s for multiple areas up until Tuesday.
Four things you should do in a heatwave – and three you should never do
What to do:
Do take warm showers Do wear sun cream Do stay hydrated Do think about bedtime routineAnd what you shouldn’t do:
Don’t ignore symptoms of illness Don’t leave pets outside or unattended Don’t push yourself during peak heat hours Read More Details
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