Southern Nomad 25th Aug



I am planning to book Southern Nomad starting on 25th of Aug, I am very worried about how bad the weather will be? I read somewhere that August is the most rainy month, As I am very keen to do skydiving on swiss alps.

And one more question : there are two excursions in 1. Sky diving and 2.Jungfrau mountain. Can I do both?

Any help would be really appreciated. Many thanks.