I do know my shit. You are comparing apples to oranges. From the 90s through untill 2013 I worked across the continent and grew both in Ghana and on the equator. You believe what ever data you like. Another thing you should also consider is soil types, lateritic around the equator and much more micacious along the west coast of Africa. If you consider the climate difference between say Scotland and Cornwall then you consider the even more enourmos distance Ghana is from the equator (some 400 miles), only a few degrees maybe, then you may realise you could be comparing southern france with london. Add to this the elevation of topography of both areas and a distinct difference is completely apparent. Produce as much data as you care to, you are wrong. These are two vastly different environs.Not trying to be argumentative mate, I don't doubt you know your shit, I'm just going by climate data. Obviously it isn't exact due to being essentially a list of average monthly conditions, and focused on more populated areas rather than the rural areas the plants would mostly grow in, but nonetheless it suggests Ghana actually has higher average humidity and similar temperatures to both Republic of Congo and democratic Republic of Congo, with the main difference being as you say, the much heavier rains in the Congo, and higher levels of sunlight in Ghana.
The exact timing and duration of certain changes in precipitation, humidity and temperature are different, but over the course of the year the averages are quite close in most categories.
Ghana (Accra) - G
Republic of Congo (Kinshasa) - R
Democratic Republic of Congo (Brazzaville) - D
Average high temperature - G/30.8c R/30.4 D/30.2
Mean day temperature - G/26.4c R/25.5 D/25.4
Average low temperature - G/23.4c R/20.6 D/20.7
Precipitation (mm) - G/806.8 R/1482 D/1394
Average precipitation days - G/75 R/115 D/89
Average relative humidity (%) - G/81 R/80.3 D/78
Average monthly sunlight hours - G/2378.5 R/1739 D/1897
Going by that, Ghana gets more sunlight, less rain, and slightly higher average low temperatures, whilst having a higher average humidity than either Congolese nation.
In terms of climate classification, all three are listed as mostly tropical savanna climate in the Koppen system, with certain regions having different climate such as equatorial or tropical monsoon, but these classifications can be quite a loose grouping of vaguely similar conditions, a short wet season can be enough to reclassify a semi-arid area as tropical for example, so I would trust the climate data more
ATB
Edited by Ken Erbis, 25 November 2017 - 07:21 AM.