Britain is anticipating its fourth heatwave of the year next week, with temperatures expected to reach at least 28C in southeast England between Tuesday and Thursday. This forecast comes as the country continues to experience an extended dry spell, with some areas recording 36 consecutive days without rain. The UK Health Security Agency (UKHSA) has issued six 48-hour yellow heat health alerts for regions across the South and Midlands, warning of increased healthcare service use by vulnerable individuals and a greater risk to life.
The Met Office defines a heatwave as three consecutive days of temperatures exceeding a specific threshold, which is 28C in London. While temperatures may reach 30C in some areas today and tomorrow, these will not meet the full criteria for an official heatwave before conditions turn fresher on Sunday. However, the forecast indicates a return to potential heatwave conditions from Tuesday.
The prolonged dry weather has led to drought status being declared in North Wales and the Upper Severn, with many parts of England also experiencing prolonged dry conditions. July rainfall has been significantly below average, resulting in hosepipe bans affecting 23 million customers and warnings that these restrictions may continue throughout the summer. Wildfires have occurred in several parts of England, Scotland, and the Republic of Ireland.
Rain is anticipated to move southwards from Scotland and Northern Ireland into northern England and parts of Wales on Sunday. While some areas may see significant rainfall, others, particularly in the South and Wales, are expected to receive minimal precipitation. There is a possibility that high pressure could build to the southeast, potentially allowing dry and hot weather to re-establish across England and Wales, with temperatures climbing back into the 30s.
These alerts are issued as millions of drivers are expected to undertake summer journeys. The AA anticipates around 6.3 million drivers will embark on road trips of over 100 miles between today and Thursday, with busy routes expected throughout the summer holidays. Road safety organizations advise drivers to plan journeys and consider traveling earlier or later in the day to avoid traffic congestion.
The Port of Dover is also preparing for a busy weekend, which is expected to be the busiest of the summer. Following previous disruptions, port authorities and French border police have collaborated to manage traffic flow, aiming to minimize delays for travelers and ensure the smooth movement of trade.