Nails feel weak after summer because repeated water exposure, chlorine, saltwater, polish remover, gel removal, cleaning, gardening, and dry cuticles can leave nails brittle, bendy, or peeling. Protect them by keeping nails short, moisturizing nails and cuticles daily, wearing cotton-lined gloves for chores, pausing gel if nails feel thin, filing gently, limiting harsh remover, and avoiding using nails as tools.