To maintain balcony decor in different seasons, choose weather-resistant materials, cover or store furniture during extreme weather, and switch out decor elements seasonally. Materials like teak wood, powder-coated metal, and outdoor fabrics will endure various weather conditions, while using furniture covers or storing items during winter can prolong their life. Seasonal cushions, throws, and decor items can be rotated to reflect the current season and keep your balcony looking fresh.