The route from Calais to Lausanne along the Via Francigena begins in the north of France, where the climate is influenced by the proximity to the English Channel. In this region, you can expect mild temperatures throughout August, with average highs around 20-25°C and lows nearing 14-16°C. Rain is a common occurrence, often anticipated with patchy rain and occasional moderate or heavy rain showers. Cloud cover varies, with conditions ranging from overcast to partly cloudy and sunny intervals.
As you move inland toward regions such as the Champagne and Burgundy areas, the temperatures mostly remain warm, with averages still within a comfortable range of 22-26°C for highs and 12-15°C for lows. The rain frequency decreases slightly, but patchy rain is still possible alongside periods of sunshine. Cloudy and partly cloudy skies are prevalent, with the precipitation typically showing as localized showers rather than steady rain.
Approaching the Jura Mountains and into Switzerland near Lausanne, the climate shifts slightly, bringing cooler temperatures. Highs tend to be around 17-20°C, with lows dropping to about 9-11°C. Precipitation tends to increase, with moderate or heavy rain showers becoming more frequent, though sunny and partly cloudy days are still common. As the elevation increases, prepare for the possibility of sudden weather changes, including cooler and wetter conditions.
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