LONDON, UK: London is bracing for another spell of hot weather, with the capital expected to experience its sixth heatwave of the summer as temperatures are forecast to rise from Tuesday, August 11, through Saturday, August 15, 2026.
The latest forecasts indicate that a period of increasingly hot conditions could develop across London and other parts of southern England next week, bringing another round of uncomfortable temperatures for millions of residents and visitors.
According to the latest forecast reports, the hottest conditions are expected between Tuesday, August 11 and Saturday, August 15, although the precise temperatures and duration could still change as forecasters receive more data.
London has already experienced repeated spells of exceptional summer heat this year. The prospect of another heatwave means residents could once again face very warm days and potentially uncomfortable nights, particularly in built-up areas where temperatures can remain high after sunset.
When will the heatwave arrive?
The current forecast window is:
Tuesday, August 11: Hotter conditions begin to build.
Wednesday, August 12: Temperatures are expected to remain high across London.
Thursday, August 13: Hot conditions could continue, with the capital potentially experiencing some of the warmest weather of the week.
Friday, August 14: Another hot day is currently forecast.
Saturday, August 15: Hot conditions could continue before temperatures potentially begin to ease.
The dates should be treated as a forecast rather than a guarantee, as weather predictions can change, particularly several days ahead.
What counts as a heatwave in London?
The Met Office uses different temperature thresholds across the UK. For London, a heatwave is generally recorded when temperatures reach the required threshold for three consecutive days. Current reports say the London threshold is 28°C.
That means several consecutive days of temperatures at or above the threshold could result in heatwave conditions being officially recorded.
Health warning for Londoners
With another period of hot weather approaching, residents are being encouraged to take sensible precautions.
People should drink plenty of water, avoid spending too long in direct sunlight and try to stay indoors or in shaded areas during the hottest part of the day.
Older people, babies and young children, outdoor workers and people with certain health conditions can be particularly vulnerable to extreme heat.
Londoners are also advised to check on vulnerable friends, relatives and neighbours during periods of very high temperatures.
Travel and outdoor events could be affected
The expected heat could also create difficult conditions for commuters, tourists and people attending outdoor events across the capital.
Public transport users may experience uncomfortable conditions, particularly on crowded buses and Underground services. Anyone travelling during the hottest part of the day is advised to carry water and plan.
The latest forecasts will become more reliable as August 11 approaches, and residents should continue checking official updates for any heat-health alerts or changes to the expected temperatures.
For now, Londoners have another date to watch: Tuesday, August 11, 2026, when the next major spell of summer heat is currently expected to begin.
Source: Met Office forecasts and latest weather reports.
