The Chemin de Saint-Gilles (Chemin de Régordane / GR 700) runs from the cooler volcanic uplands around Le Puy‑en‑Velay to the warmer Mediterranean plain near Saint‑Gilles, producing notable shifts in temperature, wind, and sun exposure. May, September, and October commonly bring moderate temperatures, longer daylight, and fewer heat extremes along the route. Early spring tends to be more unsettled and cool on the uplands, high summer is markedly hot and exposed in southern stretches, and late autumn into winter brings shorter days with more frequent rain, occasional snow or ice, and reduced services.