If you haven’t already, you could give these weather presets a shot. There are 2 specifically for gliders in here (Soaring Ridge and Soaring Thermals) but the others may be interesting too.
https://flightsim.to/file/6079/dnbof-weather-presets-pack
Not sure if since Asobo added gliders these work in the same way now or are even necessary/compatible but I don’t see why not.
I have a bunch more presets for gliders but honestly unsure where they came from now. Could be part of this pack but they just didn’t update the store page description. I have Soaring - Cross Country and a few others, IIRC. Could have come from the GF Discus.
Also this thread may be of interest to you: