Northern Ireland basks in sizzling sunshine as UK heatwave intensifies

Thursday night… Divin’ right in at last light at Portrush West Bay

(Image: Paul McFarland • Picturskew Photography)

Large parts of the UK – including Northern Ireland – are experiencing heatwave conditions, with temperatures expected to approach 30°C, or above, locally this weekend.

The Met Office confirmed that the current hot spell meets the official heatwave criteria, marking one of the most widespread heat events of the year.

According to Met Office Chief Meteorologist Steve Willington, the current heatwave is “more widespread than previous heatwaves this summer.” He noted that “temperatures are likely to locally approach 30°C tomorrow (Saturday) over Northern Ireland and 31 or even 32°C over parts of Scotland.”

The highest UK temperature so far was recorded in Ross-on-Wye, reaching 32°C on Thursday, with forecasts suggesting that some areas could reach 33 or even 34°C by Saturday.

Friday afternoon in Ballycastle, County Antrim

(Image: Anne Kelly)

Nights remain warm with elevated health risks

It’s not just the daytime heat raising concerns. Warm and humid nights are expected to continue, especially in western parts of the UK. Some areas could experience overnight temperatures remaining in the high teens or even low twenties.

Urban areas and locations close to high ground are particularly affected.

The UK Health Security Agency (UKHSA) has issued amber and yellow Heat Health Alerts, covering all of England and warning of increased health risks, particularly for vulnerable groups. The alerts remain in place until 14th July.

RNLI Issues Coastal Safety Warning Amid Soaring Temperatures

With many seeking relief at the coast, the RNLI has reminded the public to stay cautious around the water.

Ross Macleod, RNLI Water Safety Manager, warned:

“Even in hot weather, the seas around our coasts are cold enough year-round to trigger cold water shock, while waves and rip currents can overpower even the most experienced water users.”

He urged beachgoers to remember the RNLI’s ‘Float to Live’ advice, which could save lives:

“Tilt your head back, with your ears submerged. Relax and try to breathe normally. Move your hands and legs to help you stay afloat if you need to… By doing this, you give yourself the chance to rest and recover your breathing.”

He added:

“We also encourage people to choose a lifeguarded beach and swim between the red and yellow flags, which is the area most closely monitored by the lifeguards.”

High UV and pollen levels add to health warnings

In addition to high temperatures, UV and pollen levels are expected to remain very high across many areas, posing further risks for those with allergies or respiratory conditions.

Relief in sight: Cooler weather expected next week

A shift in weather is expected early next week, bringing showers, thunderstorms, and cooler temperatures. On Monday, rain is forecast across much of the UK, with temperatures dropping to more comfortable levels, especially in western areas.

While some eastern regions may still see highs in the upper 20s, the trend toward fresher and more changeable conditions will continue through midweek.

What defines a heatwave in the UK?

In the UK, a heatwave is defined when a location records three consecutive days with daily maximum temperatures meeting or exceeding the official threshold – a value that varies by region to reflect local climate patterns.