This is the Met Office UK Weather forecast for the week ahead 15/09/2025. Low pressure will continue to bring spells of wind and rain to the UK this week but there are some signs of a change later.
00:00Hi there and welcome to the Met Office week ahead forecast.
00:03There's no denying that September so far has been wet.
00:07This week so far has also been windy and wind and rain remain the key themes this week
00:13as low pressure after low pressure turn up across the UK.
00:17Signs of a change into next week, more on that later.
00:20But for now, we're still talking about low pressure.
00:23One low clears on Tuesday, a respite for many from the wet weather,
00:27although it's not entirely dry or entirely sunny.
00:30Showers continue to feed into western parts of the country,
00:32particularly northern and western England, western Scotland, Northern Ireland, North Wales.
00:38Now, towards the south, it is a drier day, some places avoiding the showers,
00:42but it turns cloudier later, a winds pick up once again as the next weather system starts to approach.
00:48Because there's less wet and windy weather around, it will feel a little warmer,
00:53temperatures reaching 20 Celsius in the southeast, mid to high teens elsewhere.
00:57But it's really through Tuesday evening that we see the next batch of wind and rain arrive from the Atlantic.
01:04This area of low pressure in particular starts to arrive.
01:07It's not going to be a particularly fierce low, but it will contain within it strong winds,
01:13especially for the northwest of the UK.
01:16You can see here, out to sea, wind gusts of 70 miles an hour plus.
01:21But as that low brings its strongest winds into Northern Ireland, Irish Seacoast, northern and western Scotland,
01:28it's mostly 50 to 60 mile per hour wind gusts.
01:31And the low sticks around for some time.
01:33So this is mid-afternoon Thursday, the strong winds pushing across northern Scotland,
01:39whilst it turns less windy further south.
01:42But certainly the midweek period is looking very blustery with a mix of strong winds and gales in places.
01:50Rewinding the clock to the start of Wednesday, and it's these fronts that we'll see first thing,
01:55bringing a swathe of heavy rain across the UK.
01:57Persistent wet weather.
01:59Heaviest across central parts, particularly for Wales, the south and west of Wales prone to very heavy rainfall,
02:0650 millimetres in six hours or so during Wednesday, especially over higher ground.
02:11And it's going to be a soggy day for most of the country, but it does brighten up in places by the middle of the afternoon,
02:17particularly, say, for parts of northern England, north Midlands, north Wales.
02:21Showery rain continues across the north and northwest of Scotland.
02:24It stays damp in the south.
02:25It's going to feel a little more humid, however, despite the cloud and the rain temperatures still managing to get up to 20 or 21 Celsius.
02:34Whilst the front moves through, we see a trailing front across central parts of the UK during Thursday.
02:41A little bit of uncertainty because this is a waving weather front about the exact location of its band of rain.
02:48But there will be some wet weather across parts of the Midlands into parts of Wales, for example, through the day,
02:53perhaps fringing upon the southwest of England.
02:56That's going to come and go.
02:57It will ebb and flow through the day, perhaps pushing north towards the end of the day.
03:01But in between that and the showers that will continue to affect the north of Scotland,
03:05there will be some drier and brighter weather, particularly for parts of northern England, for example.
03:09And towards the far south and southeast, most likely staying drier.
03:13Still fairly gusty in the south, but the strongest winds will be pushing through northern Scotland at this stage.
03:18And as I mentioned, coastal gales with gusts in places of 50 miles an hour or so.
03:24Now into Friday, that trailing weather front that I mentioned, it's still with us, but it's going to push further north once again across parts of Wales into northern England, southwest Scotland and northern Ireland.
03:33And again, further heavy falls of rain expected in these locations, particularly over higher parts of northwestern UK.
03:40Towards the south, however, it does turn drier and brighter, the best of the sunshine in the southeast.
03:46And winds are beginning to change direction.
03:48That could bring some warm weather into London, for example, 23 or even up to 25 Celsius, depending on the exact orientation of those winds.
03:57However, it is going to be a much less pleasant feeling as you step outside across northwestern parts of the UK.
04:04Then to explain what's going on for the second half of the week, take a look at the setup for the jet stream on Tuesday.
04:11And as you can see, it's fairly regular across the North Atlantic, fairly flat.
04:16And this is the cause of low pressure after low pressure.
04:20But as we go through the next few days, there are subtle changes in the amplification of that jet stream.
04:27In other words, it becomes more wriggly as it crosses the North Atlantic.
04:31This portion of the jet stream pushes south, whilst the portion over the UK pushes north.
04:36And that causes a few things.
04:38One, as I mentioned, it does bring up some warmer weather into the southeast on Friday and into Saturday.
04:43Chances of some thunderstorms developing as that happens on Saturday itself.
04:47It also pushes the wettest weather towards the northwest of the UK as we begin the weekend.
04:52But within this trough, this dip of the jet stream, that's going to slowly cross the UK during the rest of the weekend and the start of next week,
04:59potentially bringing some heavy rain and showers.
05:02However, the net impact of all of that is that we've got this big ridge of the jet stream to the west of the UK and high pressure building.
05:10And that ultimately is likely to cross the UK as well as we go through next week.
05:16So there are some signs there of an end to the very wet and windy weather, an end to the low after low after low setup that we've got at the moment,
05:27and perhaps a drier interlude for the final week of September.
05:32But a long way to go before we get there.
05:34And, of course, we'll keep you updated on all the day-to-day detail on our YouTube channel.
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