The Congo has a tropical climate characterized by high humidity and heat. There are two wet and two dry seasons. At Brazzaville, in the south, the average daily maximum temperature is 30° C (86° F ) and the average minimum temperature 20° C (68° F ). At Souanké, in the far north, the extremes are 29° C (84° F ) and 18° C (64° F ). Annual rainfall varies from 105 cm (41 in) at Pointe-Noire, in the southwest, to 185 cm (73 in) at Impfondo, in the northeast.