Image source, Richard Baker/Getty
BySarah Keith-Lucas
Lead Weather Presenter
ByMatt Taylor
Lead Weather Presenter
Changeable autumnal conditions are acceptable to proceed done this coming week, with spells of wetter and windier upwind processing astatine times.
Monday volition bring a short-lived burst of warmth and sunshine earlier temperatures driblet to levels much emblematic for September aboriginal successful the week.
A strengthening pitchy watercourse volition bring deeper, low-pressure systems arsenic the week goes on, with the imaginable for insignificant disruption towards adjacent weekend.
Higher unit looks acceptable to physique again for the extremity of the month, but prospects of a late-September heatwave stay uncertain.
Strengthening pitchy watercourse to bring windier weather
The jet stream is simply a ribbon of fast-moving aerial precocious successful the atmosphere, astir six miles supra our heads, and its shape, velocity and presumption assistance dictate what benignant of upwind we experience.
A flatter and stronger pitchy stream, with speeds of much than 170mph, volition bring deeper areas of debased unit to the UK aboriginal successful the week.
During the commencement to the week, the pitchy watercourse volition beryllium comparatively anemic and loop to the northbound of the UK, allowing higher unit to make and a lukewarm south-westerly airflow to instrumentality hold.
Later, the pitchy watercourse volition instrumentality connected a much southerly path, flowing faster and straighter towards our shores. This volition mean little unit volition form, bringing rainfall and brisk winds astatine times, and temperatures volition drop.
A cooling inclination this week
Monday volition beryllium the warmest time of the week, with the aerial coming successful from a south-westerly direction.
Many areas volition enactment reasonably cloudy, with immoderate rainfall astir coasts and hills successful the west. Despite this it volition consciousness lukewarm and alternatively humid, with temperatures climbing supra 20C successful galore places.
Where the prima does interruption through, successful cardinal and confederate parts of England, temperatures could scope arsenic precocious arsenic 26C.
A alteration successful upwind absorption volition bring a driblet successful somesthesia though the week, but lone person to the seasonal mean of 14-20C
By Thursday the winds volition crook much westerly oregon north-westerly, bringing a fresher aerial wide and a cooler consciousness to the weather. Temperatures by this signifier volition scope astir 14 to 16C successful Scotland and Northern Ireland, and 17 to 20C successful England and Wales.
Will we spot September retired with a heatwave?
Forecasts are showing that areas of precocious unit should person much power connected the upwind for the past week of September. This whitethorn mean longer adust interludes and the accidental of returning to above-average daytime temperatures, but the grade of somesthesia emergence volition beryllium connected the positioning the precocious unit comparative to the UK.
While long-range forecasting is fraught with uncertainty and details are taxable to change, determination is presently thing to bespeak that a heatwave is connected the cards.
Indeed, arsenic autumn advances and the nights go longer, precocious unit overhead could pb to immoderate alternatively chilly mornings.
You tin support an oculus connected the temperatures wherever you are by checking BBC Weather online and the app.
English (US)·