What's the climate like in Nigeria?

I don't think it is a tropical rain forest climate, because the tropical rain forest climate in Africa is mainly distributed in Congo basin and eastern Madagascar. But Nigeria is not in the Congo basin, but in the north of the Congo basin, which should belong to the tropical grassland climate.

This is not a alpine plateau climate, because there are no tall mountains. Although it is a plateau, the altitude is not very high.

Based on this, plus the comparison map, I think it is Nigeria or savanna climate. Features: high temperature throughout the year, obvious dry and wet seasons, and less annual precipitation.