Senegal's climate is pleasantly tropical, with Dakar ranking as one the coolest, breeziest spots in West Africa. The country's average daily temperatures range from 18°C (65°F) to 31°C (87°F). In the north and central parts, the wet season lasts from July to September, while in the Casamance it's about a month longer on either end. Rainfall averages range from 300mm (12in) in the north to as much as six times that in the south; Dakar gets over 600mm (24in) annually. The dry season (December to April) is the time of the hot, dry harmattan winds.