Light, casual clothing is best for sunny, mild fall days in Greece. Breathable cottons and linens are preferable to synthetics. Skirts, sleeve less dresses, slacks, long shorts and T-shirts are acceptable in any but the most formal situations. Men may want to pack a short sleeve dress shirt and sport coat for the fanciest resort restaurants. Bring a sweater, or light wind breaker for cool evenings. Most important, you will want comfortable, lace-up shoes for exploring archaeological sites, and water-resistant sandals or shoes for the beach.