The UK is under amber heat-health alerts as forecasts point to one of the longest-lasting heatwaves in decades. Multiple reports say the weather system builds across the country, with hotter conditions spreading further north and west, and temperatures expected to rise above 30C in parts of the UK. The Met Office and other forecasters describe the period as “not straightforward,” with officials warning that the sustained heat creates ongoing health pressure rather than a brief spell.

Several outlets report the UK is entering its third heatwave of the year, with some areas forecast to reach around 35C, while the BBC says heat-health alerts are extended as the event continues. Health services, including the NHS, are warned of “sustained pressure,” and the BBC notes that record-setting warm days have been reached for temperatures at or above 34C.

Separate coverage highlights environmental impacts. London and surrounding areas are reported to be placed on wildfire alert as conditions move toward an “absolute peak.” The Guardian also reports an extreme marine heatwave affecting UK waters, with risks to sea life mentioned by the BBC and related coverage.