The Vía Gebennensis from Genève to Le Puy‑en‑Velay crosses river valleys, low passes, and rolling foothills, with weather swinging between sun, showers, and occasional frost. May and September tend to bring milder temperatures and longer daylight than the hotter midsummer or the colder winter stretch. Across the route, spring and early autumn mix bright spells with rain, midsummer skews warmer with periodic heavy showers or storms, and winter features short days, frequent rain or snow, and some icy starts.