NORTH Wales is set for unusually high temperatures for this time of year over the Bank Holiday weekend and half-term, with highs of 27°C expected in some areas.
Forecasters say parts of the region could see temperatures climbing to around 27°C over the coming days. Rhyl is forecast to see highs of 20°C today, 25°C on Monday and 26°C on Thursday. Conwy is expected to reach 20°C today, 24°C on Monday and 27°C on Thursday.
In Wrexham, temperatures are predicted to peak at 31°C on Monday, before reaching 27°C on Tuesday and Thursday.
A statement from the Met Office said: “Heatwave thresholds - defined as three consecutive days at or above a set temperature - are likely to be reached in parts of the UK from Sunday, most likely in south-eastern England.
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“As the Bank Holiday weekend progresses, these conditions are expected to become more widespread, extending across central and western England and into parts of Wales, as temperatures remain well above average.”
A UK heatwave threshold is reached when an area records at least three consecutive days with maximum temperatures meeting or exceeding the level set for that county. The threshold varies across the UK.
Although winds are expected to turn more southerly by the end of the week, the Met Office said the rise in temperatures is not primarily due to hot air moving north from southern Europe or North Africa.
Instead, forecasters say the warm spell is being driven by an area of high pressure developing over and near the UK.
As the high-pressure system strengthens, air sinks through the atmosphere and becomes compressed as it descends, warming through a process known as adiabatic compression.
The Met Office added: “Temperatures over the next few days will be unusually high for this time of year.
“While it may feel like a summer’s day, the sea will still be fairly cold, so take care if you’re heading to the coast this weekend.”
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