That's 8000 posts on this incarnation. From reading of all the old posts, it seems the old forum was retired around 2004 and this one put up, but the old content was lost rather than migrated to the new forums. I always wonder what was lost in transitions like that.
Find some wind forecasts in your area. Some suggestions:
windfinder.com, it has an hourly forecast with both average and gusts for 3 days out, and rough estimates for 7 days out. If you're lucky you can find a weather station near where you fly.
windy.com, it has similar data of average speeds and gusts, but with different forecast models, and not so much of a point forecast.
willyweather has both average wind (https://wind.willyweather.co.uk/nw/greater-manchester/wigan.html) and UV (https://uv.willyweather.co.uk/nw/greater-manchester/wigan.html) although if you're far enough north the UV index and sunburn are less of a concern.
I also use the US national weather service hourly forecast graphs, but they won't give you the data you need in the UK.
The forecasts aren't perfect, but they are a good guide to find must-fly days and days not to bother.
In addition to the forecasts, having a range of kites can help. You can get kites that fly in very light wind, no wind (and indoors!) and kites that can be reasonably controlled even in dangerously strong winds. Thus even if the forecast is wrong, and you get to the flying fields to discover calm air, you can pull a super ultralight or indoor kite from your bag.