This should be in links... but for a start it'll be here.
Switzerland hosts quite a lot of different festivals (like many other countries btw).|
Here are the main "general" events:
www.paleo.ch in Nyon, between Geneva and Lausanne, 6 days in late july, has a free campsite. Tickets are sold in april. Tend to be sold out in 2 weeks.
www.festivalcite.ch in Lausanne. all events free: all kinds of music, dance, theatre, etc.. a very nice free festival held in the streets of the old town. ~2 weeks, first half of july.
www.montreuxjazz.com. Once this festival inspired Smoke on the water from Deep Purple. Main events are expensive (but it can be it), and you can still go to the off festival for its ambiance. beginning of july
www.fornoise.ch a true small rock festival nearby Lausanne. First half of august.
www.gurtenfestival.ch the "big" festival in the Bern area
www.rockozarenes.ch middle size one, but not always for the artists. The festival is held second half of august in a roman theatre
www.openairgampel.ch close to the Alps in Wallis
www.greenfieldfestival.ch related to big Rock am Ring & Rock im Park in Germany if I remember well
www.openairsg.ch...in the Sankt Gallen region, far east of Switzerland...
www.moonandstarslocarno.ch the only "big" main music festival I've found for Ticino, in the South...
and also: festival de la bâtie, Vernier sur Rock, Metropop,...
& more to come
Festivals, Sports, Concerts, Public Holidays...