BBC Weather is forecasting several days of heavy rain, thunder and lightning for London as the capital moves out of heatwave territory. The unsettled conditions are expected to begin on Friday, August 28, with thundery showers predicted during the morning rush hour, which may prompt commuters to avoid travelling to the office.
Thundery showers and bank holiday washout
Further thunder and lightning is forecast to hit the capital again at 7pm on Friday, before being replaced by intermittent rain and sunshine on Saturday. According to the latest BBC Weather forecast, the remainder of the bank holiday weekend is likely to be a washout, with heavy rain expected across Sunday and Monday.
Revellers heading to Notting Hill Carnival are likely to experience heavy rain on Sunday, with grey clouds and thundery showers taking hold late into the night. Monday will see further bursts of thunder and lightning in the morning and into the early evening.
Temperatures remain warm despite wet weather
Despite the rain, temperatures will remain warm, with thermometers next week expected to hover at an average high of 23C. The capital is definitely out of heatwave territory for now, but the Met Office has refused to rule out the possibility that the mercury will rise again.
The Met Office's long-range outlook says temperatures are expected to be above average for the month, with a higher chance of hot spells in the south of England. It currently reads: "Further into September, drier weather may become more prevalent, especially in the south and southeast, with any more unsettled conditions tending to become confined further north and northwest. Temperatures will probably be near normal at first, but may turn warmer later with a chance of some hot periods in the south."
Flooding risk as autumn approaches
Heading into autumn, London may face other weather challenges following the varied effects of the heatwaves. Weather expert Jim Dales told MyLondon the city could face flooding as a direct result.
According to the BBC Weather 10-day forecast for London, Friday, August 21 will see sunny intervals and a gentle breeze with a high of 21C and low of 11C. Saturday, August 22 will be similar with a high of 22C and low of 11C. Sunday, August 23 will be sunny with light winds and a high of 24C and low of 13C. Monday, August 24 will have sunny intervals and a moderate breeze with a high of 23C and low of 16C. Tuesday, August 25 will see sunny intervals and a moderate breeze with a high of 25C and low of 17C. Wednesday, August 26 will bring drizzle and a gentle breeze with a high of 26C and low of 18C. Thursday, August 27 will have light rain showers and a gentle breeze with a high of 23C and low of 15C. Friday, August 28 will see thundery showers and a moderate breeze with a high of 21C and low of 14C. Saturday, August 29 will have light rain showers and a gentle breeze with a high of 22C and low of 15C. Sunday, August 30 will bring thundery showers and a gentle breeze with a high of 22C and low of 15C. Monday, August 31 will see thundery showers and a gentle breeze with a high of 22C and low of 14C.
