BBC Monthly outlook
Monday 8 August—Monday 15 August
Cool and breezy start but warming up again later
This week will start on a cool, showery and breezy note, with most of the showers likely across Scotland and Northern Ireland. In between the showers, there will be plenty of sunny spells and in any shelter, it will feel quite pleasant, especially in the south. Nighttimes, however, will be much cooler than the weekend just past, with a touch of grass frost possible in the north particularly Monday on night. Wednesday will see a band of rain move eastwards across the country, with some heavy bursts possible in the north, whilst some southern areas will see very little rain. From Thursday onwards we are likely to see a north-south split develop across the UK, with southern areas seeing plenty of dry and bright weather. Northern areas will see some further rain at times and the rain will occasionally be accompanied by a brisk breeze. Temperatures for all areas will gradually recover to nearer normal for the time of year, with southern areas becoming very warm in the sunnier spells by the weekend
Monday 15 August—Monday 22 August
A very warm start, but cooling down later
Next week is set to start on a largely dry and bright note with high pressure in charge across most of the UK. There will be warm spells of sunshine for many, particularly in the south. The far northwest, however, is likely to see some breezy and wet weather at times, with this gradually moving southeastwards across many northern and western areas. At the same time southern and eastern areas may perhaps see some very warm or hot conditions moving up from the south, but this, in turn, may bring the risk of some thundery downpours developing. During the second half of the week and into the weekend, the changeable weather is likely to win the battle and gradually move eastwards across many parts of the UK. Temperatures are also likely to fall back to around normal for the time of year.
Monday 22 August—Sunday 11 September
Signs of an unsettled start to autumn
As we end August and start September it is looking likely that the weather will remain rather changeable, with frequent spells of rain and strong winds moving across the UK. In between the wind and rain we are likely to see some drier and brighter intervals, with southern and eastern areas perhaps more favoured to see these. Temperatures are likely to be near normal for the time of year, but it could feel rather cool in the wind and rain.
Next week
Will Summer end on a high or a low?
http://www.bbc.co.uk/weather/2635167#outlook