Clothes: Cotton clothes, tops, shorts, trousers and skirts - it does not get cold in the evening so no need for jumpers. Swimming costumes and a beach towel are a must.
Shoes: Footwear is usually casual sandals but you should bring some covered walking shoes for exploring or longer trips to the town.
Sun tan cream: Sun tan cream (high factor) is extremely important as the Brazilian coast seems cooler than it is due to the pleasant breezes.