**Wales Braced For Record-Breaking Temperatures As Another Heatwave Looms, Forecasters Warn**
Wales is set to experience yet another spell of intense heat as the Met Office predicts the hottest day of the year may be just days away. Current weather models indicate that a new UK heatwave is increasingly likely, with temperatures poised to surpass the year’s previous highs and possibly usher in the second official heatwave of 2025.
Earlier this month, Wales endured sweltering conditions, with the mercury hitting a remarkable 30°C in Cardiff and reaching similar heights in Trawscoed, Ceredigion, on Thursday 19 June. However, experts now suggest those figures may soon be eclipsed, as an area of high pressure strengthens over the region and pushes temperatures even higher.
Starting from Sunday, 29 June, forecasters expect a marked rise in temperatures across Wales. Many towns are predicted to see the thermometer soar to around 27°C as the latest spell of hot weather takes hold. By Monday, conditions look set to intensify further, with some locations anticipated to exceed 30°C for the first time in 2025, potentially outstripping this year’s previous highest temperature and delivering what may be the official threshold for a heatwave—three consecutive days at or above 25°C.
Meteorologists stress that this heat will not be confined to one region. Both north and south Wales are likely to experience significantly warmer conditions through the start of next week. The heatwave’s impact is also expected to be felt more broadly across the UK, especially in the southeast and East Anglia, as continental influences bring a spell of particularly hot weather westwards from mainland Europe.
Deputy Chief Meteorologist at the Met Office, Mike Silverstone, commented on the pattern, noting, “As temperatures rise over the weekend and into next week, we anticipate some of the warmest conditions of the year, especially in southern and eastern areas. The intensifying high pressure system will be the main driver, creating settled but very warm or even hot weather for many.” He went on to add that northern and north-western areas of the UK should still be warm but not quite as extreme as those further south.
Day-by-day forecasts show Sunday as the onset of this latest hot spell, with widespread highs across the country. In Holyhead, Anglesey, temperatures are projected to be slightly cooler, potentially around 18°C, reflecting the typical trend for coastal areas to remain more temperate. However, by Monday, the situation will escalate, with Monmouth possibly reaching a scorching 32°C. Cardiff could see highs near 29°C, while Swansea and Aberystwyth are likely to experience 27°C. Even the coolest spot, Holyhead, is expected to enjoy balmy weather at 20°C.
By Tuesday, while a minor dip is anticipated, Wales will still be notably warm. Monmouth could again top out at 25°C and much of the country is predicted to remain comfortably above seasonal averages, with lows for the day only dropping to about 17°C on Anglesey.
Such weather extremes prompt concerns around public health and safety, and both the Met Office and local authorities have issued advice for coping with the heat. Residents are being reminded to use high-factor sunscreen, stay hydrated, and limit strenuous activity during the peak heat of the day. Purchasing fans, keeping homes shaded, and monitoring vulnerable people—such as the elderly and very young—are also recommended for staying cool and safeguarded during the hottest periods.
The emerging pattern is a reminder of recent trends towards more frequent and intense heatwaves across the UK, often attributed to climate change. Long-term weather records show Wales, and the wider UK, experiencing hotter and less predictable summers, placing added pressure on infrastructure and local services.
Looking ahead, the Met Office continues to monitor the evolving situation closely and will issue updates and warnings as necessary. For many, the prospect of sunshine and warmth may be welcome, but the sharp rise in temperatures brings with it important considerations for everyday life. As Wales gears up for a sweltering spell, preparation and caution remain the best defences against the heat.