Camino Lebaniego crosses from the Cantabrian coast into interior valleys and the Castile and León plain, passing through contrasting weather regimes. May, September, and October align with steadier patterns described for this route, balancing coastal showers, settled inland stretches, and moderated heat on the plateau. Conditions fluctuate outside those windows, with springtime variability, midsummer warmth and occasional storms, and late-autumn to winter periods marked by frequent rain on the coast, colder inland spells, and the possibility of snow and icy mornings around the higher valleys.