This route crosses from the dry, open plateau around Madrid into Galicia’s cooler, wetter hills, with exposure and elevation changes shaping conditions. Spring and early autumn bring milder days; April, May, and September align with longer light, generally moderate plateau temperatures, and broadly open village services. Farther west, especially in Galicia, showers and cloud increase, while summer heat and winter cold make timing, hydration, layers, and flexible staging particularly relevant.