As Britain faces its fourth heatwave of the summer, park authorities have issued warnings advising the public to avoid sitting beneath trees due to an increased risk of falling branches. The advisory comes amid prolonged dry conditions and soaring temperatures, with southern England expected to see highs reaching 33 degrees Celsius this week.
In London’s Hyde Park, staff have been instructed to discourage visitors from seeking shade under tree canopies, and deckchair concessionaires have been asked not to place seating directly beneath trees. Royal Parks officials cited “summer branch drop” — a phenomenon where trees, stressed by a combination of heat and intermittent heavy rain, shed branches unexpectedly. While risk elimination is impossible, active steps are being taken to mitigate dangers associated with the phenomenon, which affects thousands of trees across park landscapes.
Similar issues have been reported at Normanby Hall Country Park in Scunthorpe, Lincolnshire. Five veteran trees there have lost branches recently, a result attributed to water stress from the ongoing drought. Liam Dent, a parks and gardens officer at the 300-acre site, explained that trees appear to be entering a survival mode, shedding damaged or weak branches to protect their main trunks and root systems.
The heatwave follows a weekend of cooler temperatures and scattered showers, but the Met Office forecasts a return to warmer conditions beginning Tuesday. Temperatures in the South East are expected to peak at 35 degrees Celsius before easing later in the week. July has already been approximately 3 degrees Celsius above average nationwide, which may place it among the hottest Julys on record, according to Met Office meteorologist Dan Stroud.
The UK Health Security Agency (UKHSA) has upgraded several yellow heat-health alerts to amber, signaling heightened risks from the heatwave. These alerts cover the East Midlands, East of England, South East, and London, and will remain in effect from Tuesday morning through Thursday. Yellow alerts persist for Yorkshire and the Humber, West Midlands, and South West regions. UKHSA officials caution that the heat may strain health and social care services and increase risks such as heat-related mortality and drowning incidents.
The heatwave is exacerbating drought conditions in many regions. The Met Office reports an extended lack of rainfall, with some areas such as Wisley in Surrey experiencing 40 consecutive dry days, and East Sussex’s Herstmonceux recording 37. Overall, southern England has received only 1 percent of its average July rainfall, while England and the UK have recorded just 5 percent and 20 percent, respectively. These dry conditions have led to lowered water levels, prompting drought status declarations in parts of North Wales and the Upper Severn area last week.
Concerns over wildfire risks have also increased, as dry woodland areas in East, South, and South-East England face the potential for severe fires, according to combined data from the Met Office, Natural England, and Natural Resources Wales. The continued combination of heat and drought underscores the challenges posed by the current summer weather pattern.