Sal Rei is a city[2] on the northwestern coast of the island of Boa Vista in eastern Cape Verde. Sal Rei is the island's main urban settlement, and the seat of the Boa Vista Municipality. In 2010 its population was 5,778. The name of the settlement means "Salt King" in Portuguese. This name stems from when the island's main industry was salt production.
The town was founded in the saltpans of Boa Vista. In 1815 and 1817, the town was sacked by pirates. Forte Duque de Bragança was built on the nearby island Ilhéu de Sal Rei to defend the town from further pirate attacks.
Sal Rei is in a desert climate zone as does the rest of the island. Its average rainfall is 67 mm (2.6 in), and its average temperature is 24.1 °C (75.4 °F). The coldest month is February which averages 21.7 °C (71.1 °F) and the warmest is September which averages 27.2 °C (81.0 °F).[5]