The region has a rainy season from April until October, during which 80% of the annual rain falls, with peaks in June and September. Annual rainfall averages 1,830 millimetres (72 in). Average temperatures range from 24 °C (75 °F) in August to 30 °C (86 °F) in February. Relative humidity is high, between 80% and 100%.[3] The basin has 223 streams with a total length of 516 kilometres (321 mi). Today, the city is home to more than 3 million inhabitants and prides itself as the city with the biggest street party in Africa.