ocr: Cuba's subtropical climate is hot all year round and very hot in the summer. Raintall is heaviest in the mountains, which receive up to 98 inches a year. Generally, the north is wetter than the south; the Guantanamo Hea receives only 8 inches ofrainfall annually. In winter, the west is sometimes affected by cold - air from the USA, but only for a day or two at a time.