The official language is Portuguese
, used in all official publications and announcemnts as well as in business, media and schools, but the local language is Cape Verdean Creole
), a Portuguese-based creole language with 90-95% of the words from Portuguese and the rest mainly from West African languages. It is divided into 9 dialects spoken on various parts of the country. Even though Kriolu is comprehensible to a skilled Portuguese-speaker almost all people can also speak
Portuguese as a second language. French Creole is not the same as Cape Verdian creole, and a considerable number also speak English; basically, Kriolu is your first option, Portuguese second, English third.
It is a good idea to know some Kriolu or at least Portuguese, since even though young urban people are often quite proficient in English, this does not apply to old and rural people, and even those who can speak English will highly appreciate any attempt you do to speak Kriolu or Portuguese.