BBC monthly outlook
Summary
A changeable month of weather
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Saturday 25 July – Sunday 2 August
Unsettled at first, then potentially hot for some
This weekend, much of the UK will be breezy with showers and some longer outbreaks of rain. One or two thunderstorms are possible, too, most likely during Saturday afternoon. However, there will be sunnier interludes as well, with the best of these during Sunday. Temperatures mostly near to the average although staying cool in the northwest.
The unsettled theme will continue into the early part of next week. Many areas will see further showers or longer outbreaks of rain with brisk winds at times. Staying cool for many, too, although the south-east may tap into some warmth at times.
A change in weather then appears likely from around Wednesday to Friday as an area of high pressure crosses the country from the west. Most areas should have at least two or three drier and somewhat calmer days. We are also likely to import warmer air from the near-continent by Friday.
There is the potential for one or two significantly hotter days around Friday and Saturday. The highest probability for a mini-heatwave appears to be in the southeast, where temperature may reach around 30C for a time. However, any strong heat should not last too long. Indications are for cooler, wetter and breezier conditions to return from the west by the end of the weekend.
Monday 3 August – Sunday 9 August
Cool, wet and breezy at times
The changeable weather conditions are likely to persist into the first full week of August. Low pressure areas passing to the north are likely to bring cool, wet and breezy weather at times. Most areas should have some showers or longer outbreaks of rain. Overall, rainfall amounts are favoured to be above average in most areas with temperatures near to a little below average.However, there should also be at least one or two drier and calmer days as high pressure areas briefly move over the country. The best chance for some drier and calmer weather currently appears to be later in the week.
Monday 10 August – Sunday 23 August
Gradually becoming a little drier and warmer
The changeable weather pattern looks like continuing into mid-August. We are likely to see further rain at times with occasionally brisk winds. However, transient high pressure ridges should also bring some drier, calmer and warmer days. Indications are that the drier and warmer days should become a little more numerous as we enter the second half of August. This is because we should see the track of low pressure areas lifting a little further away to the north of the UK. Rainfall amounts look like falling nearer average for many after mid-month and perhaps below-average over southern Britain.
However, confidence in the forecast becomes rather low as well after mid-month. There is a risk that low pressure continues to track over the UK, which would lead to a somewhat wetter and breezier outlook then. There is even a slight risk of one or two ex-hurricanes or tropical storms reaching our shores later in August. If this happens, it would bring the potential for one or two strong wind events in the north-west. However, this appears more of a risk as we enter autumn.
Further ahead
A changeable month of weather appears most likely through August. We will take another look to see if there are still signs of drier and warmer weather through the second half of the month.
https://www.bbc.co.uk/weather/outlook