Weather forecast builder for the Via Francigena del Sud: Roma → Leuca

The Via Francigena del Sud from Roma to Leuca crosses Lazio, Campania, and Apulia, with conditions shifting from cooler, wetter winters to hotter, sunnier summers. Based on the seasonal patterns along this route, March and September typically balance daylight, moderate temperatures, and changeable skies with passing showers. Extended stretches are open and exposed, so heat and strong sun dominate in midsummer, while late autumn and winter bring more frequent rain, occasional blustery spells, and shorter days that can influence timing between towns and services.

• Spring: Variable skies with frequent showers; daytime ranges from low teens to mid‑20s °C, occasionally higher south; nights sometimes drop to single digits.
• Summer: Very warm to hot, especially south; Lazio mid‑30s °C, Campania high‑30s, Apulia frequently 40s; mostly sunny, with intermittent showers and thunderstorms.
• Autumn: Transition to cooler conditions; mixed sun and cloud with frequent rain, occasional heavy downpours; temperatures span about 10–30°C, with cooler nights developing.
• Winter: Unsettled and wetter overall; temperatures range roughly from -3°C to 20°C across regions; overcast spells, sunny breaks, and periodic heavy rain.