In May, the 'Vía Gebennensis' presents a diverse weather experience as it traverses different landscapes. The trail begins under varied weather conditions in Geneva, with patterns of rain and occasional sunshine, with temperatures ranging from 4°C to 19°C. As the journey progresses, walkers experience a mix of cloud cover and rain interspersed with sunny days, as temperatures slowly climb, particularly in places like Saint-Genix-sur-Guiers where highs reach 26°C. Toward the latter part of the route, the weather displays more consistency in moderate temperatures and rainfall patterns, providing a dynamic backdrop for the trek.
Starting in Genève, the weather fluctuates between moderate to heavy rain showers and occasional sunny days. Temperatures vary, reaching highs of up to 20°C but dropping to as low as 4°C on certain days.
Continuing to Col du Mont-Sion, conditions remain unpredictable with frequent rain showers and heavy rain. Despite this, some days offer milder weather with highs nearing 20°C, while lows stay around 4°C to 7°C.
In Frangy, the pattern of rain interspersed with clearer skies persists. Highs can climb up to 19°C, offering brief warming before frequent showers return.
From Serrières-en-Chautagne onward, the weather alternates between sunny spells and heavy showers, with temperature highs peaking at 24°C on sunnier days, providing a reprieve from earlier rains.
As walkers reach Yenne and Saint-Genix-sur-Guiers, the climate stabilizes slightly with warm and sunny days interrupted by occasional heavy rainfalls, with temperatures maintaining a comfortable range of 20°C to 26°C.
The trail progresses through areas like Le Pin and La Côte-Saint-André where frequent sunny days begin to dominate, occasionally swept by rain showers.
The journey toward Saint-Romain-de-Surieu sees an increase in cloud cover with scattered rain, yet periods of sunshine brighten the days, helping temperatures stay between 15°C to 26°C.
Near the end, regions like Bourg-Argental and Les Sétoux exhibit continued variability with showers and some downpours contrasted by bright sunny weather. While conditions remain mixed, temperatures generally hover from 12°C to 29°C, assuring walkers of warm weather moments.
Finally, reaching Montfaucon-en-Velay and Araules, there are episodes of moderate rain interspersed with overcast and sunny periods, wrapping up the trail with this rhythmic dance of weather.
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