Gusts of up to 50mph could sweep across London and the south east this afternoon, according to the Met Office.
The capital looks set to be drenched by heavy downpours this week following the hottest summer on record.
A yellow weather warning came into force at 8pm on Sunday and will run until 6pm on Monday.
Londoners are likely to feel 45mph-55mph west or south-westerly gales, with transport delays and short-term power cuts possible.
Experts say wind speeds of 50mph or more are considered dangerous, as they can cause significant damage to trees, power lines and buildings.
⚠️ Yellow weather warning updated ⚠️
— Met Office (@metoffice) September 12, 2025
Strong winds for most parts of England & Wales
Sunday 2000 – Monday 1800
Latest info 👉 https://t.co/QwDLMfRBfs
Stay #WeatherAware⚠️ pic.twitter.com/x3DDYpIYny
Commuters have also been advised to check road conditions if driving and bus or train timetables to look out for delays or alterations to their journeys.
Despite the turbulent winds, sunny conditions are forecast throughout the day, with pleasant highs of 18C (64F) by 1pm.
Meteorologist Tom Morgan, of the Met Office, said there could be "low impacts in general" but added: "Nonetheless, there could be some brief kind of power interruptions and some travel disruption for the return to work on Monday morning.
"So it will be quite a windy start to the week. Gales certainly possible for many parts of England and Wales, perhaps even severe gales on Irish Sea coasts.”
He added that Monday will be "a windy and pretty unsettled start to the week with a mixture of sunny spells and heavy blustery showers".
The coming week will bring "changeable" conditions with periods of wind and rain throughout.
Mr Morgan said: "The ground has started to become fairly wet over recent weeks and it will not take a huge amount more for there to be some surface water, potentially some flooding issues as we go towards the middle part of the week."
