The southern coast of Madeira (including Funchal, Câmara de Lobos, Ponta do Sol, Calheta, Ribeira Brava) is the sunniest, warmest, and driest part of the island.
Why? The island's mountains (up to 1,862 m at Pico Ruivo) block prevailing northeasterly trade winds, which bring moisture and clouds to the north. The south lies in a rain shadow, enjoying a subtropical microclimate.
Result: year-round tourism, banana/avocado/mango cultivation, cliffside vineyards, and the island's densest resort development.