Hello,
I would like to go to via ferrata Murren in may 10-13. Is that too early? Is there snow in the route?
According to their website it is open from 15th June:
http://www.klettersteig-muerren.ch/index.php/de/klettersteig.html
Well it never really closes, no barriers either end. Depends on the weather. Could be iced up still that early in May.
It is just below village level. I was there beginning of May last year and there was no snow or ice at village level. The conditions would have been fine at that time.
This Alpine Conditions page gives a summary of what is being climbed at the moment, what is 'in' nick and what the prospects are...