The year begins under the influence of the harmattan winds in the dry season.
From the en.wikipedia.org
The northern areas are subject to harmattan winds, which are hot, dry, and carry dust.
From the en.wikipedia.org
Harmattan winds cause the coldest weather between December and February.
From the en.wikipedia.org
In December and January, the city is affected by harmattan winds.
From the en.wikipedia.org
Lasting from December to February, the harmattan is the primary source of the city's dry season.
From the en.wikipedia.org
Dry, dusty, harmattan winds occur from January to March.
From the en.wikipedia.org
Its monsoon-like rainy season alternates with periods of hot, dry harmattan winds blowing from the Sahara.
From the en.wikipedia.org
In Ghana we know of raining season and harmattan.
From the bbc.co.uk
Liberia has a hot equatorial climate with most rainfall arriving in summer with harsh harmattan winds in the dry season.
From the en.wikipedia.org
More examples
A dusty wind from the Sahara that blows toward the western coast of Africa during the winter
The Harmattan is a dry and dusty West African trade wind. It blows south from Sahara into the Gulf of Guinea between the end of November and the middle of March (winter).
Parching dust-bearing land-wind on coast of Upper Guinea in December, January & February
(pronounced har-ma-TAHN)a mild, dry, and dusty wind that originates in the Sahara Desert.
A dry, hot wind, prevailing on the Atlantic coast of Africa, in December, January, and February, blowing from the interior or Sahara. It is usually accompanied by a haze which obscures the sun.
(n.): a dry, dusty wind from the desert in West Africa. Back
The light winds from the north which carry tiny particles of sand from the desert, causing skies to become hazy from December to February
Another Saharan wind (along with the simoom), this wind blows along the Atlantic coast of Africa.