With the entire island south of the Tropic of Cancer, the local climate is tropical, moderated by northeasterly trade winds that blow year-round. The temperature is also shaped by the Caribbean current, which brings in warm water from the equator. This makes the climate of Cuba warmer than that of Hong Kong, which is at around the same latitude as Cuba but has a subtropical rather than a tropical climate. In general (with local variations), there is a drier season from November to April, and a rainier season from May to October. The average temperature is  in January and  in July. The warm temperatures of the Caribbean Sea and the fact that Cuba sits across the entrance to the Gulf of Mexico combine to make the country prone to frequent hurricanes. These are most common in September and October.