The weather on the Camino de Baztán, a walk from Bayonne, France to Pamplona, Spain, can change a lot in April. It's usually quite cool along the route, with the highest temperatures reaching up to 14-15°C and the lowest being around 4-9°C. The temperature changes often, so it's good to be ready for anything.
The weather along this path is a mix, with mostly cloudy skies. Rain is common too, with light and moderate rain showers mostly at the start of your trip in Bayonne and close to the Spanish border.
As you enter Spain through Amaiur and Berroeta, the temperature slightly drops (to about 12-13°C in general). Rain is still likely, but less so than in the French part of the trip.
Nearing the end of your trip in Pamplona, the weather changes a bit more. There's more difference between the day and night temperatures, with nights being colder at around 5°C. There are more sunny days in this part of the trip, but rain is still often in the forecast.
Overall, travelers can expect a mix of cool temperatures, some rain, and some sunny spells along the Camino de Baztán. Dressing in layers and having waterproof clothes and gear would be helpful.
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