Britain will enjoy a few more days of sunshine before a 10C drop in temperatures next week with Storm Aiden poised to strike.
The country’s Indian summer will be blasted away by a 65mph 800 mile-wide storm on Tuesday, the latest weather forecast shows.
If the storm – the first of winter – develops enough to prompt amber warnings, the Met Office will name it Storm Aiden.
On Sunday, most parts of the UK will be dry and warm, the Met Office said.
It will be cloudier in far northern Scotland, parts of eastern Scotland and northeast England.
During the evening, there will be clear skies across most of England, Wales, Scotland and Northern Ireland, according to the latest forecast from the MeteoGroup.
As the night progresses, patches of mist and fog will become widespread but will be most dense in the west Midlands as well as parts of eastern England.
It will be breezy across Scotland, forecasters said.
This week, people made the most of the sunshine as parks and beaches looked busy.
Brighton was expected to have seen 50,000 daily visitors, with 25,000 at Bournemouth.
But this is set to change in just a few days as the mercury drops and the UK experiences colder weather.
MeteoGroup forecaster Ravi Kotecha said: “Subtropical Storm Alpha may push warmth towards the UK into Monday.
“It’s possible Wednesday’s Atlantic low pressure system could be a named storm. Rain and brisk winds are expected.”
The cold front will trigger a dramatic drop in temperatures, with London dropping 10C from 25C on Sunday to just 15C on Thursday.
Next week’s temperatures will be below-average for this time of year, according to the BBC forecast.
Monday morning will be mostly sunny once fog clears in the morning.
The Met Office said next week “will feel more like autumn”, with wet, windy weather and cooler air.
Met Office forecaster Marco Petagna said: “The Atlantic jetstream will power up and bring a big change to rain and wind.”
“As we head towards the end of the month, the weather may be unsettled due to cyclones in the Atlantic.”
Matthew Box, Met Office meteorologist said: “Unsettled weather is possibly on the cards towards the end of September.
“While it is still early, a number of these cyclones in the Atlantic could have some influence on our weather as we head towards the final part of September.”
UK 5 day weather forecast
Most areas fine, warm and dry with plenty of sunshine once early mist and fog patches and cloud clears. Cloudier across far northern Scotland and parts of eastern Scotland and northeast England. Less breezy than of late.
Clear spells at first and a dry night for most. Areas of low cloud and fog patches forming overnight, fog most widespread over eastern England and Northern Ireland.
Early fog and low cloud clearing by mid-morning. Otherwise most areas fine, warm and dry with plenty of sunshine. Cloudier and windier in the very far north where rain later.
Outlook for Tuesday to Thursday:
Fine and warm across southeastern areas on Tuesday. Rain will move southeast across northern and western areas, introducing much more unsettled, cooler conditions to all parts for Wednesday and Thursday.
-- to www.mirror.co.uk