Home / Weather / London Heatwave Looms: Temperatures to Soar This Weekend
London Heatwave Looms: Temperatures to Soar This Weekend
9 Jun
Summary
- London could reach 24°C to 28°C this weekend, starting Friday.
- An official heatwave requires three consecutive days at 28°C or higher.
- Urban heat island effect makes cities feel hotter during heatwaves.
Londoners can expect warmer weather this weekend as temperatures are predicted to climb from Friday, June 12th. The Met Office forecasts highs between 24°C and 28°C for the capital. This anticipated warm spell brings the possibility of an official heatwave, which is defined by three consecutive days meeting or exceeding a specific temperature threshold.
For London, this threshold is set at 28°C. Therefore, to be officially classified as a heatwave, temperatures would need to remain at or above this mark for three consecutive days. The city's urban environment, characterized by concrete and asphalt, contributes to the 'urban heat island' effect, making built-up areas feel significantly hotter than surrounding regions.
Recent years have seen London experience extreme May temperatures, with record-breaking heat recorded in Kew Gardens in 2026. The current predictions suggest a return to much warmer conditions, prompting discussion about heatwave definitions and the impact of urban infrastructure on perceived temperatures.
