Abuja experiences three seasons each year: a hot and humid rainy season from April to October; a dry season from October to April; and a brief windy season in between known as the Harmattan season, when the dry and dusty West African trade wind blows through the city, coupled with intense cold. Sometimes the dust storms severely limit visibility and can even block the sun for several days, comparable to a heavy fog. During the rainy season average daytime temperatures reach around 86°F (30°C) while nights are relatively warm. In the dry season, daytime temperatures in Abuja can soar as high as 104°F (40°C) and evenings can be chilly, with temperatures dropping as low as 54°F (12°C).