The UK's relentless heatwave shows no signs of abating, as it enters its second week with a vengeance. This is the third heatwave of the year, and it's getting worse. More places in England and Wales will hit 30C, with some areas potentially reaching the mid-30s. Scotland and Northern Ireland won't be spared either, with heatwave thresholds briefly crossed. The UK Health Security Agency (UKHSA) has issued amber and yellow heat health alerts, warning of significant impacts on health and social care services, including a rise in deaths, particularly among vulnerable groups. This heatwave is not just about the temperature; it's about the humidity too. While brisk north-easterly winds and lower humidity in northern Scotland have provided some respite, the return of easterly winds and increased humidity will bring temperatures soaring again. By mid-week, temperatures will peak, with readings around 26C or 27C in western Scotland and Northern Ireland, and 30C or higher in much of England and Wales. Some models predict isolated peaks of 34C or 35C. This heatwave is already breaking records, with nine days of 34C or higher this year, two more than the previous record. And it's not just the daytime temperatures that are rising; night-time temperatures are increasing too, with the prospect of 'tropical nights' being recorded. The prolonged hot and dry weather has also increased the risk of wildfires, especially in England and Wales. Lower humidity and stronger winds over the weekend saw the fire risk raised to 'exceptional' in parts of southern England, and it's expected to rise again from Wednesday. Despite the chance of thunderstorms later this week, a concerted cooldown remains uncertain. Computer weather models show a likely trend to more northerly winds this coming weekend, which will bring a drop in temperature, but how much cooler it will get is still uncertain. And with the possibility of high pressure building back in quickly, it may not be long before the UK returns to heatwave conditions. This means many areas will continue to see little or no rain. So, what's the takeaway? Well, it's time to take this heatwave seriously. The UK is in the grip of a heatwave that's getting worse, and it's not going away anytime soon. We need to prepare for the worst and hope for the best. And remember, this heatwave is not just about the temperature; it's about the humidity too. So, stay cool, stay hydrated, and stay informed. The BBC Weather app is a great resource for the latest temperature trends, so make sure you're up to date.
