Image source, Getty Images
BySimon King
Lead Weather Presenter
While bedewed upwind is forecast for galore this week, immoderate long-range forecasts are suggesting further adust and sunny spells successful September.
Many of america person experienced the archetypal spot of rainfall successful astir 2 months arsenic the upwind turned much unsettled connected Tuesday.
This alteration successful upwind patterns volition besides bring little temperatures done this week, possibly falling to astir 2 to 4C beneath the mid-August average.
The imaginable of cooler upwind has led to speculation astir the anticipation of different heatwave - the sixth of the twelvemonth - processing successful September.
It has been an exceptional summertime truthful acold with the Met Office saying it is likely to beryllium the hottest connected record.
Even with cooler conditions this week, the mean mean somesthesia would request to beryllium considerably beneath mean for the past 2 weeks of August, to support 2026 from surpassing the grounds acceptable conscionable past year.
The hotter-than-average summertime with an accrued likelihood of heat spikes and heatwaves was predicted by the Met Office and MeteoGroup - the BBC's upwind information providers - backmost successful June.
These seasonal forecasts looked astatine a scope of upwind patterns arsenic good arsenic predictions that human-induced clime alteration would bring a greater accidental of hotter upwind successful the UK summer.
Image source, PA Media
Water levels astatine the Llwyn-On reservoir successful South Wales got truthful debased during the hot, adust summertime that they revealed an aged chromatic bridge
Meteorological summer ends connected 31 August. This is due to the fact that meteorologists divided the twelvemonth into 4 adjacent quarters, each made up of 3 months, for easiness of grounds keeping and statistical analysis.
Long scope forecasts are present looking up to meteorological autumn - the months of September, October and November.
As autumn marks the modulation from the warmth of summertime to the colder conditions of winter, this tin beryllium a trickier play to marque broader predictions for.
There are nevertheless a fewer factors that could constituent to different lukewarm spell successful September.
Dry ungraded and marine vigor 'load the dice'
Image source, Earth Nullschool
Sea aboveground somesthesia anomalies astir the UK are astir 3C - yellowish shadiness - supra mean for the clip of year
Computer forecast models are suggesting that precocious unit whitethorn go established to the southbound of the UK done the archetypal portion of September.
High unit leads to adust and mostly sunny upwind astatine this clip of year.
It whitethorn besides gully up immoderate warmth from continental Europe, boosting temperatures and the anticipation of a hotter spell.
July was the driest connected grounds crossed England and Wales with more than 2 thirds of England and each of Wales presently successful drought.
When ungraded is precise dry, aerial somesthesia tin emergence much rapidly that it does erstwhile ungraded is wetter. This is due to the fact that nary vigor is mislaid successful evaporating immoderate ungraded moisture truthful it goes straight into heating the air.
While determination is rainfall this week, it volition not beryllium capable to afloat saturate the ungraded and marque a quality to the drought situation.
Marine vigor tin besides power the somesthesia connected land. The seas astir England and Wales are currently up to 3C supra average.
This other warmth from the oversea tin besides support the somesthesia higher connected land.
All the factors supra tin load the dice for hotter spells to impact the UK.
Will determination beryllium a heatwave successful September?
The long-range forecast for September, October and November from the Met Office suggests that the accidental of a lukewarm three-monthly play is "higher than normal".
They spell connected to accidental that this volition bring an "increased hazard of heatwaves and heat-related impacts, particularly during the archetypal fractional of the period".
With September inactive 2 weeks away, we tin not yet suggest erstwhile - oregon so if - this volition happen. We tin lone accidental that the hazard is there.
The long-range forecast besides suggests that the three-monthly play of autumn is apt to beryllium drier than average.
With the Environment Agency suggesting we request "weeks of supra mean rainfall" to alleviate the drought situation, determination is nary motion of immoderate large improvements successful the contiguous future.
You tin support up to day with the latest longer-range forecast with our monthly outlook.
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