In reply to jessyb55:
Do you have a car? If so, well... the world's your lobster.
As Ebdon says above, the weather the few years has been (relatively) great during the festival. I remember 2018 particularly fondly, as it involved a very cold but luminous day on Gimmer and Harrison Stickle with one of my closest friends, whilst other friends moaned about increasing ticket prices at the festival.
2020 it seems I managed a day out bouldering at Thorn Crag. 2019 I spent the day in Langdale, trad climbing. 2018 I was also in Langdale, trad climbing. 2017 was actually a bit damp and cold, but I got out... in Langdale trad climbing... as well as Wasdale for a weekend of walking.
Quite a theme... I'm recommending Langdale for trad climbing? More seriously, all the crags in Langdale face south, so they're a good bet at this time of year. You've Gimmer if the weather's unexpectedly amazing/you're feeling hardy, the two Ravens and White Ghyll if you need something more sheltered, and Elterwater and Little Langdale if the day turns into a damp low-level walk.