If you walk from Bayonne to Pamplona on the Camino de Baztan, it's usually not too hot or too cold. The average temperature is between 8°C and 11°C, but it can drop down to 1°C to 7°C.
It often rains on this route, with a mixture of light and heavy showers. You can expect a lot of cloudy days, but sometimes you will also see the sun. You might also experience some freezing rain as you get closer to Pamplona.
The amount of rain decreases the closer you get to Pamplona. Bayonne, the starting point of the route, gets the most rain, which can range from moderate to heavy. Pamplona, at the end of the route, gets the least rain, with showers likely to be spotty and occasional sun.
So, if you're going on this journey, prepare for changing weather conditions with quite a bit of rain but also some sunny moments.
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