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.