
While it may feel 'warm and rather humid', the three-day weather outlook anticipates 'thundery bursts' and 'heavy showers'.
Meteorologists said today (Saturday, May 2) would begin 'unsettled', with certain regions experiencing heavy rainfall.
Any early showery or thundery bursts would move eastwards, with additional showers then emerging through the morning, especially across Scotland and Northern Ireland.
Dan Harris, Met Office chief forecaster, said: "Meanwhile, rain will reach southern England during the morning, spreading north into much of England and Wales later in the day, again heavy at times with a small risk of thunderstorms, these most likely in the southeast."
"Away from the heaviest showers, many southern and eastern areas will feel warm and rather humid, while temperatures farther north stay closer to average and conditions vary markedly through the day."
Those across England and Wales were likely to witness a damp start to Sunday, May 3.
The rainfall was anticipated to steadily diminish throughout the day, permitting brighter intervals to emerge in places, though this could spark heavy downpours or thunderstorms.
Temperatures were forecast to remain near average in northern regions, while parts of the southeast could still feel relatively warm.
Deputy chief forecaster, Mark Sidaway, said: "Bank holiday Monday will remain changeable, with lingering cloud and scattered showers across southern and central areas, but these should be lighter and fewer than over the weekend."