Longer term forecast for the end of August

[BIWI]

@OhYouBadBadKitten and @GloriaSmud - I need your help!

I'm approaching a significant birthday at the end of the month, and we're having a party. Given the numbers attending, we'll definitely have to use the garden. Any ideas what the weather is going to be throwing at us by then?!

TIA

Sorry, should have said that we're in SW London.

@BIWI Have you got a date for your party?
The GFS only goes as far as Bank Holiday Monday and it's a bit too far out to really give a reliable forecast.
(But for what it's worth, at the moment it's saying the BH weekend is looking wet on the Saturday but dryer Sunday and Monday!)

Thanks @GloriaSmud! Party is on 31st. I did think it was probably a bit far away to get any real sense of what the weather would be like, but it's always worth asking