The longest day of the year is also the hottest, with temperatures skyrocketing up to 37C degrees in Paris, 38C in Madrid, and 34C in London. Even Ireland is expected to get toasty with a predicted 28C high.

While Dubliners might be taking advantage of the excuse for some 99 ice creams, others have taken to twitter to share their complaints with the rest of the (overheating) world.

BAN CLOTHES AND WORK. #heatwaveuk pic.twitter.com/AuxeMMMqCE