The Met Office has confirmed that London is set to experience its sixth heatwave of the year, beginning this weekend and lasting for at least six days. The heatwave will officially start on Saturday, August 8, when temperatures are expected to reach the 28C threshold required for heatwave status in the capital and the wider South East. The hottest day will be Sunday, August 9, with temperatures peaking at 32C in the late afternoon, around 4 or 5pm.
Heatwave definition and expected temperatures
In London and the South East, a heatwave is defined as three or more consecutive days with maximum temperatures of 28C or above. According to the Met Office, this weekend will meet that criteria, with Saturday breaking the threshold and Sunday reaching the peak of 32C. The heat will ease slightly on Monday and Tuesday, with highs in the high twenties, before climbing back to the low thirties on Wednesday and Thursday, August 12 and 13.
The Met Office's forecast extends only to Thursday, but it does not rule out the possibility of the heat continuing into Friday and the following weekend. The BBC's forecast, however, suggests a slightly cooler day on Tuesday, August 11, which would break the heatwave definition. Their meteorologists predict a return to higher temperatures from Wednesday to Saturday, but they caution that long-range forecasts are subject to change.
Long-term outlook and potential for further heatwaves
The Met Office's long-range forecast indicates that high pressure is likely to remain near the UK, with occasional unsettled interludes from Atlantic fronts or thundery plumes. Rainfall is expected to be below average, and temperatures are likely to be above average, with the possibility of further hot spells and heatwaves, particularly in the south. This outlook extends into early September, meaning Londoners should prepare for more warm weather in the coming weeks.
Forecasting weather this far ahead is inherently uncertain, and the public is advised to stay updated with the latest forecasts. As the heatwave approaches, it is important to stay hydrated and take precautions against the heat, especially during peak afternoon hours.
