Across salt flats, farmland, and the Guadalquivir plain, this exposed route alternates between bright spells and passing showers, with clearer periods inland from Cádiz toward Sevilla. January, February, and April align with the more reliable windows described, offering cool to mild days, quick‑moving fronts, and long breaks of sunshine between systems. Later spring trends warmer on open stretches, summer becomes persistently hot with scarce shade, and autumn varies from warm, mostly sunny starts to more unsettled patterns as the first stronger rain systems develop.