In April, the weather along the Via Francigena route from Calais to Lausanne varies significantly across regions. Northern coastal areas in France, starting with Hauts-de-France, experience a mix of sunny days interspersed with occasional rain showers. As the route progresses southward into the Grand Est, rain becomes more frequent with periods of moderate rainfall. Temperatures gradually increase as the route moves from a cooler start around 11°C to highs around 20°C further south. Entering the Bourgogne-Franche-Comté region, a noticeable increase in rainfall occurs, accompanied by both overcast days and brief sunny spells. Finally, as the route approaches the Vaud region in Switzerland, the weather presents more variability with moderate rain showers and occasional sunny breaks, maintaining moderate temperatures around 17°C.
April in Hauts-de-France begins with quite a few sunny days, as seen in places like Calais and Guînes, where temperatures rise to about 15°C. There are intermittent bouts of clouds and rain, notably heavy rain in Calais at times. Maximum temperatures tend to ascent from around 8°C to 19°C in places like Bruay-la-Buissière and Arras. However, heavy rainfall occurs at sporadic intervals.
In Grand Est, the weather is a mix of moderate rain and sunny intervals, particularly around Reims and Vitry-le-François. The temperatures vary between sunny days reaching up to 23°C and colder days dropping to about 10°C. Especially notable are drizzles and heavier rain showers around the middle of the month, with significant precipitation reaching up to 17.4 mm at times.
The Bourgogne-Franche-Comté region begins to see an increase in rainfall, with numerous days experiencing moderate to heavy showers, particularly in towns like Besançon and Mouthier-Haute-Pierre. Temperatures reach highs of around 21°C in Champlitte and fluctuate as some days witness frequent changes from sunny spells to heavy rains.
Entering Vaud in Switzerland, areas like Lausanne and Orbe are frequently subjected to moderate and heavy rain showers, reaching up to 30.5 mm at times. Despite this, there are days of clear sunny periods with temperatures maintaining between 12°C and 25°C, offering some respite from the frequent showers.
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