Nigeria Climate Info via Susan B.'s Brother

   Looking at the yearly temps, their hottest months are generally March-May. It has to do with the ocean currents in the Gulf of Guinea, it seems.  Similar to the way San Francisco is in the 60's-70's in the Summer but gets hot in the Fall, especially October, because of the Humboldt current off the coast there.

    The rainy season, which starts in central Nigeria in May-June and lasts until the end of the year.  According to what I've learned now, the almost constant cloudiness of the rainy season keeps temperatures mild throughout that period.  In the dry season, a dry wind from the north off of the Sahara, called a Harmattan wind, brings somewhat warmer temperatures but also dust which causes a haze.  The haze also moderates the heat from the Sun, just like the clouds in the rainy season.  For a short 2-3 month period in the spring, inbetween the Harmattan winds and the rains, the temperatures climb into the 90-110 range.

    With the rainy season in full swing in central Nigeria, there is plenty of ground moisture to soak up the Sun's energy (and consequently really boost the humidity).

    Humidity will be a bit of an adjustment though.  With the river and the ocean so close, the average humidity is about twice what ours is - around 60-70% this time of year for them when it isn't raining and up to 90%+ when it is raining, which is almost every day.

  Learn something new every day.  I expected that being between the Equator and the Sahara would make them hotter.  I was wrong.  Abuja is in the central savannah climate area with just two seasons, dry and rainy.  The coastal south is tropical rainforest and in northern Nigeria it is a different story, with a Sahel or semi-arid climate near the southern Sahara.