Greater Miami and the Beaches' subtropical climate ensures plentiful sunshine year-round. There is enough rainfall during the summer and early fall to keep the local vegetation ripe with color and to entice cool ocean breezes to tickle the air. Virtually all buildings are air-conditioned. In fact, a light sweater or jacket is advisable to take the chill off the indoor climates. The powerful rays of the sun also make it a good idea to wear a hat and protective sunscreen when planning to be outdoors for long periods. Otherwise, both men and women will be most comfortable in lightweight resort wear. Depending upon personal preference, there are plenty of opportunities to dress formally.