Weather forecast builder for the Via Garona

The Via Garona (GR 861) follows the Garonne from Toulouse to Saint‑Bertrand‑de‑Comminges, with weather shifting from river plain to Pyrenean foothills. April, September, and October feature cool‑to‑mild days, steadier walking, and fewer disruptive heat spikes than midsummer or the short, wetter spells of winter. Conditions remain variable year‑round—showers can arrive at any time, some sections turn soft after rain, and the final days toward the Comminges often run cooler and wetter than the early urban stretches.

• Spring: Cool to mild days with regular showers, intermittent sunshine, occasional lingering snow near the foothills, and sometimes muddy riverside stretches.
• Summer: Highly changeable, with periods of high heat on exposed sections, alternating dry spells and heavy showers, and sticky, muddy patches afterward.
• Autumn: Generally settled, mixing sunny intervals with bursts of rain; later weeks bring crisper mornings, occasional frosts near the finish, and shortening daylight.
• Winter: Frequent rain with episodes of sleet or snow toward the Comminges, variable skies, freezing rain at times, slippery surfaces, and short days.