The climate of Cuba is clearly defined with two seasons, the dry season (winter) from November to April, and the rainy season (summer) from May to October. The average annual temperature is 25 ° C, the average winter temperature is 20 ° C and in summer is 26-27 ° C. During the winter season is often the entry of cold fronts with temperatures below times at 10 ° C, very rarely.
The average relative humidity is high, averaging around 80%. The maximum daily, usually above 90%, occur at sunrise, while the minimum down until 50-60% at noon inside the territory. The wettest areas are the western and central regions, along with the main mountain.
In the season that runs roughly from November to April, variations in weather and climate become more remarkable, associated with the passage of frontal systems (cold fronts), to the influence of continental anticyclonic centers and extra-tropical low pressure. From May to October, however, there are few variations over time, with more or less pronounced influence of the North Atlantic anticyclone. The most important changes are related to the presence of disturbances in the tropical circulation (easterly waves and tropical cyclones).
In Cuba there is now a developed system of forecasts and warnings of any dangerous weather phenomenon and a Civil Defense System able to efficiently protect the lives of citizens and visitors. If Tropical Cyclone, the Forecast Center of the Institute of Meteorology Tropical Cyclone warnings issued since the cyclone is born and grows until it dissipates. These ads are becoming more frequent as the cyclone is closer to Cuba, with presentations of meteorologists on television and national radio and local, which helps to alert everyone of any danger in good time for taking measures protection.