As the UK continues to be roasted by Europe’s blistering ‘heat dome’, many will be hoping that temperatures will soon start to cool.But an imminent ‘Super El Niño’ could send the mercury even higher later this year, experts have warned.NASA satellites recently confirmed that the weather phenomenon – characterised by warmer water in the equatorial Pacific – is ‘underway’.The space agency predicts this El Niño event will have ‘widespread effects’, including bringing wetter conditions to the American Southwest and drought to countries in the western Pacific.But experts say we can also expect extreme heat ‘almost everywhere’ – including the UK.While its influence on British weather is indirect, a particularly strong El Niño event could raise global temperatures and supercharge the heating effects of climate change.Simon Culling, a prominent data collector and investigator for the UK’s Tornado & Storm Research Organisation (TORRO), wrote on X: ‘If the current predictions for the forthcoming El Niño phase are realised, what does this mean for the UK?‘It may mean hotter summers for both 2026 and 2027 and increases the risk of a significant cold spell in winter 2026/27. Let’s see what plays out.’ The WMO has warned that people should prepare for hotter-than-normal temperatures 'across nearly all parts of the globe' There are several heat and thunderstorm warnings still in place today, following a record-breaking day yesterdayYesterday, the record for the hottest June day was broken as a temperature of 36.1°C was recorded in Gosport, Hampshire.It broke the previous top temperature of 35.6°C in 1976 and 1957, the Met Office said.Over the weekend the weather is expected to transition into more changeable, fresher summer conditions.However, forecasts indicate that July will see drier-than-average conditions with above-normal temperatures.While its effects on the UK are yet to be determined, meteorologists say El Niño's intensity will likely be comparable to the 1997/98 event which saw global temperatures reach their highest on record.During its development, the UK experienced an exceptionally hot, sunny and humid August characterised by heatwaves.Speaking on the possible development of El Niño Grahame Madge, a climate science communicator at the Met Office, previously said: ‘This is likely to be a significant event.‘It’s likely to be the strongest El Niño event so far this century. And we're probably comparing it to the 1998 one. This was a significant year for global temperature and at the time, it was the warmest year on record.'