Sunday 10th August 2025

Heatwave number 4 incoming, but it won’t be hot and sunny all the time.

Thanks to Louise for the photograph.

So the general picture sees high pressure building over the UK, helped on by the remnants of Tropical Storm Dexter to our west, which is slowly trundling our way though also significantly weakening.

Today sees good spells of sunshine, some fair-weather cloud will bubble up at times, particularly during the lunchtime period, but otherwise sunshine is the theme. Very warm, reaching around 26’C, or close to. Mostly clear skies overnight, down to around 13’C.

Monday sees long spells of sunshine, though probably somewhat hazy at times. Hot, we should just about get to 30’C. Quite a bit of cloud around overnight, a chance of a shower and a very small chance of a rumble of thunder. A warmer and more humid night, probably no lower than 18’C.

Tuesday will see long spells of sunshine, and a little bit of cloud at times. Hot – reaching somewhere between 32’C and 34’C. Mostly clear skies overnight, though perhaps some mist/fog patches by dawn in more prone spots. A fairly warm night, down to around 17’C.

Wednesday sees the remnants of Dexter close by, but having very little effect on our weather – it will remain hot and fairly sunny, though some more high/mid-level cloud around, and a very small, say 5-10% chance of a thundery shower developing in the afternoon. Hot, some uncertainty on temperatures but somewhere between 29’C and 34’C – with the bottom half of that range more likely, and probably quite humid too. Highly uncertain overnight, there is a small chance of spectacular thunderstorms developing, or a small-moderate chance of some thundery rain developing – if either happens, then expect a very warm and humid night. Slightly more likely nothing happens and it is dry.

So it gets pretty complex from here – I feel like I have more confidence for the weather the week after, then I do for the rest of the coming week/weekend.

The general picture for Thursday sees a new low to our west, though there is quite a lot of uncertainty as to what it does – will it cross the UK and head towards Scandinavia, or will it sink south to the west of Spain/Portugal? Either way, I have more confidence that the Azores high to the west of it, will build over the UK either for the weekend or into next week.

All that said, Thursday is probably hot and sunny once more. Some cloud probable, a small chance of a shower and less hot than it has been – say around 28’C or so.

The more likely outcome for Friday is a broadly pleasant and very warm/quite hot day with variable amounts of cloud. There is a smaller chance of something cloudier and showery – depending on what the aforementioned low pressure does.

Next weekend is highly uncertain, maybe settled and very warm/quite hot is slightly more likely, but it could very easily be showery instead.

The week after more likely will be very warm or hot, often sunny, often dry – though I wouldn’t rule out the chance of a thundery shower at some point.

I still expect August to balance out as warmer, drier and sunnier than normal, and the summer-like conditions should remain perhaps into September. Not every day, there will be some interruptions, but for many days. Further heatwaves are very possible.

Have a great Sunday.