The climate of the Canary Islands is said to be a subtropical climate, due to its mild temperatures and the irregular and scarce rains, which raise from the eastern to the western islands.
Among the geographical factors which have influence on the climate, the latitude, the orography and the orientation of its slopes, the cold ocean current crossing the Canary Islands, its closeness to Africa and the incidence of the humid trade winds from the northeast are essential.
Thanks to these factors, a hot mild climate without aggressive thermal constrasts generates a climate with temperatures ranging from 18ºC in the coldest monght -usually February- and 23ºC during summer. The average temperature of summer is 25ºC.
Occassionally, the dry hot wind coming from Africa (the so called "sirocco"), coming from the south and east, generates a phenomenon called "calima" (clouds of dust from the Sahara) and gives rise to clouds of very fine particles from the desert and pours tons of dust in suspension on the islands.
