Havana is characterized by a tropical climate, that is closely borders on a tropical monsoon climate, it results tempered by the island's position in the belt of the trade winds and by the warm offshore currents. Rainfall is heaviest in June and October and lightest from December through April, averaging 1,200 mm annually.
 In this type of climate there is no meaning to consider a winter season because the average temperature is, more or less, the same during the whole year, so we don’t consider making some strategies to reduce the energy related to heating system.