London is bracing for a prolonged heatwave that could last up to ten days, according to BBC Weather forecasts. The hot spell is expected to begin this weekend, with temperatures rising to 28C on Saturday and remaining between 28C and 32C each day through Monday, July 13, the end of the current two-week forecast.
Heatwave Criteria and Forecast Reliability
An official heatwave is declared in London when temperatures reach at least 28C on three consecutive days. While the forecast issued Tuesday morning may change, the prediction of a heatwave in early July is supported by other agencies, including the Met Office. The Met Office confirmed that the UK set a provisional June temperature record of 37.7C on Friday, measured at Lingwood in Norfolk, surpassing the previous record of 37.3C at Santon Downham in Suffolk. This new record beats the longstanding June record of 35.6C from 1976 by more than 2C, a significant margin given that records are typically broken by fractions of a degree.
Climate Change and Record-Breaking Heat
Scientists warned that the June 2026 heatwave would have been virtually impossible 50 years ago, with human-driven climate change fueling more intense and frequent extreme heat events. During last week's heatwave, the Met Office issued a rare red warning for extreme heat for some areas, the first time such a warning was issued for three consecutive days. The heatwave forced schools and nurseries to close, led to record ambulance call-outs, hospital critical incidents, train cancellations, court delays, and a hosepipe ban in Kent due to soaring water demand.
Tragic Incident and Safety Warnings
Greater Manchester Police reported that the body of a teenage boy was recovered from Clifton Country Park in Swinton after a 15-year-old got into difficulty in the water on Saturday. Detective Inspector Dave Ogden from Salford CID said: “Saturday’s incident is truly heart breaking, and my thoughts remain with the family and loved ones of the young boy who has so tragically lost his life. While we are satisfied there are no suspicious circumstances, this incident is an incredibly upsetting reminder of the serious risks associated with open water. We understand people want to make the most of the warm weather, but we would urge everyone to stay safe and avoid entering reservoirs, rivers, canals or ponds. Please take care and enjoy the weather in a safe way.”
Upcoming Weather Outlook
The Met Office said temperatures had returned to average for the coming week, bringing largely settled conditions, but there would be a return to heat in the early part of next week. Tony Wisson, Met Office deputy chief forecaster, stated: “Toward the weekend, high pressure will continue to build in across most of the UK as it extends from the Azores. This will lead to more settled, warm or very warm conditions for many, especially across England and Wales, though some rain may still affect the far north. The forecast for this weekend suggests that temperatures could approach high 20Cs across parts of England, perhaps 30C in parts of the South East, with values of mid to high 20Cs in Wales. Although a return to heatwave conditions is looking increasingly likely for some areas, the likelihood of such extreme high temperatures or high levels of humidity as last week is currently low.”
