The Camino Portugués from Tui and Vigo carries an Atlantic pattern of mixed sunshine, cloud, and passing showers across the year, with day-to-day variability. May, June, and September offer milder temperatures, longer days, and generally steadier conditions along this Atlantic route. Outside these windows, early spring stays variable and damp, high summer trends warmer with occasional heavy showers, and late autumn into winter turns wetter, cooler, and shorter on daylight.