UK May Bank Holiday Weather: Record Heat Turns to Cold with Wintry Showers Forecast - Bio Points News

Dramatic Drop in Temperatures to Mark May Bank Holiday Weekend in the UK

United Kingdom — After an exceptionally warm start to May, with record-breaking temperatures across all four nations, Britain is bracing for a sharp and dramatic drop in temperatures just in time for the May Bank Holiday weekend. What started as a week of unseasonably hot, summer-like conditions is now expected to slide back to the cooler, more familiar weather traditionally associated with British bank holidays.

A Record-Breaking Start to May 2025

This week brought the warmest start to May on record in the UK. On Thursday, May 1, Kew Gardens in London recorded a sweltering 29.3°C, marking the highest ever May 1st temperature in the country’s recorded history. Wales wasn’t far behind, with Cardiff hitting 27.4°C — its hottest temperature for May on record.

Scotland and Northern Ireland also reported their warmest day of 2025 so far, making it a rare early-summer spell across all four nations.

Colder Air Moving In Across the Weekend

However, as many Britons prepare for a long May Bank Holiday weekend, the weather is poised for a noticeable turn. A high-pressure system that brought dry, sunny, and hot conditions is shifting, making way for cooler air masses and weather fronts from the north and northwest.

Already, temperatures have started falling across the northern half of the UK, with Friday holding on to some warmth in the far south of England. But from Saturday, a northerly to north-westerly wind is forecast to bring a weak cold front southeastwards, replacing the early May warmth with fresher, chillier air for all parts of the UK.

While many areas will remain largely dry with sunny spells, there’s a chance of scattered showers, particularly in northern Scotland and the far south of England.

Sunday Could Bring Wintry Showers in Scotland

By Sunday, temperatures are expected to dip below average for early May. The north-easterly winds will usher in cooler air, bringing daytime highs of:

• 14-17°C in the west

• 12-15°C in the east

• 9-11°C along North Sea-facing coastal areas

In fact, the higher grounds of Scotland may even see a few wintry showers — an unusual occurrence for this time of year, especially following the week’s record-breaking warmth.

A Chilly Start to Bank Holiday Monday

The drop in temperatures won’t stop there. According to forecasts, Sunday night into Bank Holiday Monday morning could see temperatures drop into low single figures. Rural and sheltered areas may even experience ground frost, particularly in northern England and Scotland.

While the saying goes, “Ne'er cast a clout 'til May be out” — a historic warning to gardeners about lingering springtime chills — it seems to ring especially true this weekend. Gardeners and outdoor event planners are being advised to take precautions against sudden temperature drops and possible frost.

Some Sunshine on the Way for Monday

Despite the chilly nights, all is not lost for the bank holiday. Monday is expected to feel slightly milder by a degree or two, with occasional sunny spells making it feel pleasant in sheltered, sunny spots.

While the air temperature will be cool, the strength of the sun will remain as high as it has been throughout the week, meaning sun protection will still be necessary for anyone spending time outdoors, whether enjoying a Maypole celebration or taking part in VE Day anniversary events.

The Outlook Beyond the Bank Holiday

Looking ahead into the following week, early forecasts suggest a gradual return to more settled and seasonally appropriate weather. While no immediate heatwave is predicted, temperatures could slowly climb back to the mid to high teens, with the prospect of drier, brighter conditions by mid-May.

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