Tenerife is the largest of the Canary Islands The highest point in Spain, the dormant volcano El Teide, can be found on Tenerife. The island is popular among tourists for its nightlife, beaches and dolphins and whales that live in its waters. Due to its volcanic origin, most of the natural beaches on the island are made of black pebbles. It is often cloudy in the north of Tenerife with more rainfall than in the south. This leads to the unique flora found growing on the island. The southern part of the island is sunniest and most popular among tourists. The subtropical climate and trade winds ensure summer temperatures of around 25 degrees, in winter the average temperature is 19 degrees.