The Cape Verde islands have slightly differing climates according to their terrain and location. Boavista has a dry-tropical climate. Humidity is low. The average daily temperature ranges from 22°C to 26°C. Highs of 29°C are seen in July/August with lows of 20°C in December/January. Ocean surface water temperatures range from 22°C to 27°C, creating a maritime temperate climate.
There are two seasons, a dry season between November and July, and a wet season, with some rain between August and October. Daily hours of sunshine vary from around 6 - 7 between August and October and 10 - 12 for the rest of the year. Total precipitation is minimal, most of the rainfall falling in just a couple of downpours a year. Wind speed averages around 13 knots, dropping to 9 knots in the summer. These are brought in by the north east trade winds and help to provide a refreshing breeze on the coast. The winds are known as the "Harmattan" and come from the Sahara; they are hot and dry and carry with them the sand that has led to the formation of the spectacular beaches on Boa Vista. The windy season is from December to April. Thus it is true to say Boavista is mostly arid and dry.
In comparison, the climate on the Canary Islands consists of daily sunshine hours of between 6 in the winter and 11 in the summer. Temperatures average between 16°C - 22°C in the winter and 19°C - 25°C in the summer. The ‘Canaries Current’ creates much colder ocean temperatures around the Canaries than are present around the Cape Verde Islands. In the Canary Islands the annual average precipitation totals 11 inches, but is spread more evenly between September and May with on average, six days per month of rainfall. The climate of Cape Verde is more suited to beach and water tourism, especially in the winter, than the already successful Canary Islands.
The likelihood of a hurricane striking Boavista is very remote, unlike the Caribbean. Hurricanes start small in the Gulf of Guinea (south of Nigeria) near the equator and sweep westwards across the Atlantic well to the south of Cape Verde and by the time they reach the Caribbean are able to cause severe damage. The fact that Cape Verde doesn’t suffer from the devastation of hurricanes is a major positive factor.