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Opi Environment. Nigeria has three distinct climatic zones. [2] According to the Nigerian Meteorological Agency, it is mainly tropical. It can be categorized into three including the tropical monsoon climate in the southern part, the tropical savannah climate, and Sahelian hot and semi-arid climate in the northern parts of the country. [2]
The harmattan, a dry desert wind, blows in north-east Ghana from December to March, lowering the humidity and causing hotter days and cooler nights in northern part of Ghana. [ 4 ] Average daily temperatures range from 30 °C (86 °F ) during the day to 24 °C (75 °F ) at night with a relative humidity between 77 percent and 85 percent. [ 5 ]
The Harmattan is a season in West Africa that occurs between the end of November and the middle of March. It is characterized by the dry and dusty northeasterly trade wind, of the same name, which blows from the Sahara over West Africa into the Gulf of Guinea. [1]
Get the Accra, Greater Accra local weather forecast by the hour and the next 10 days.
According to the Orbital Monsoon Hypothesis this maximum in insolation increases the strength of monsoon circulations in the northern hemisphere. On the opposite end of the spectrum, when the Northern Hemisphere is pointed toward the sun during aphelion , there is a minimum in insolation and the North African Monsoon is at its weakest.
A hot semi-arid climate (BSh) is predominant within the Sahel in the northern part of Nigeria. Annual rainfall totals are low. The rainy season in the northern part of Nigeria lasts for three to four months (June to September). The rest of the year is hot and dry with temperatures climbing as high as 40 °C (104.0 °F) .
The drier northern areas have warmed more rapidly than southern Ghana. Overall, Ghana has experienced a 1.0 °C increase in temperature since 1960. [15] Northern Ghana has only one rainy season, while southern Ghana has two, and annual rainfall is highly variable. Long-term trends for rainfall are challenging to predict.
The fourth region, the high plains, occupies the northern and northwestern sector of Ghana. [1] Like most West African countries, Ghana has no natural harbours. [ 1 ] Because strong surf pounds the shoreline, two artificial harbours were built at Takoradi and Tema (the latter completed in 1961) to accommodate Ghana's shipping needs.