The Met Office has pinpointed Liverpool as an area where temperatures will drop dramatically after a warm and bright Easter weekend.
Forecasters say Britons will still enjoy sunny dry conditions over the next week but will feel temperatures drop back to around average for this time of year. It comes after Easter Friday saw the warmest day of the year so far.
But this week temperatures will drop as a cooler front arrives from the west followed by an easterly breeze. Some scattered rain and cloud will also move in but the conditions will generally stay sunny and dry for most.
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Met Office spokesman Simon Partridge said: "There will be a noticeable dip tomorrow because we'll have a very weak cold front move across the country tonight and that will introduce slightly cooler air in the west tomorrow."
Mr Partridge said today the southeast will see temperatures in the high teens while areas like Liverpool will see the drop from around 18 to 19C to around 12 to 13C. He said: "So we'll have a noticeably fresher feel tomorrow although [it will be] mostly dry with a decent amount of sunny spells around - but just not as warm of it has been.
"That's kind of going to be a repeating theme through the remainder of the week. Tuesday is another pretty dry day but there may be the odd light shower mostly towards the southern third of the UK. In terms of temperatures on Tuesday, we'll be down a little more again so we'll be looking at highs of around 15 to 16C on Tuesday so just basically seeing that sort of continual drop of temperatures day on day."
Mr Partridge said the wind will begin to change direction to the east on Wednesday, but the day will likely be sunny with a few isolated showers. Thursday and Friday will see the easterly breeze kick in, the forecaster said.
He said: "It's not noticeably strong but it will be a fresh breeze down the east coast of the UK so if you're on those eastern coasts, it will feel a little bit chilly towards the end of the week.
"Again, it will mainly be a mix of sunny spells and a few showers. With Thursday and Friday, we're still looking at 14 to 16C as the highest temperature so no significant change in the temperatures from Tuesday onwards."
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