However, in the future, these areas will struggle to produce chocolate. By 2050, rising temperatures will push chocolate-growing regions 1,000 feet upwards into the mountains, to facilitate cacao growth. It's estimated that 89.5 per cent of the 294 locations examined in these countries will become less suitable for cacao production by 2050.
This is predominantly due to the lack of humidity, not necessarily the temperature.
The NOAA wrote last year:
The danger to chocolate comes from an increase in evapotranspiration, especially since the higher temperatures projected for West Africa by 2050 are unlikely to be accompanied by an increase in rainfall, according to business-as-usual carbon dioxide emissions scenarios. In other words, as higher temperatures squeeze more water out of soil and plants, it's unlikely that rainfall will increase enough to offset the moisture loss.
Some of the research highlighted by the IPCC 2014 report is a 2013 study headed by Peter Läderach. Läderach authored a 2011 paper giving a pretty dire forecast for cacao cultivation; the 2013 study reaches slightly less worrisome conclusions, though challenges to West Africa cacao growers remain.
Selectively bred seeds with superior drought resistance are a remedial option, as is a cultivation called 'cabruca' from Brazil, which involves retaining and replanting rainforest trees to provide cacao trees with shade.
This helps decrease both temperature and evapotranspiration and cacao trees cultivated by this method also seem less vulnerable to pests.
There's still time to adapt, but it will be necessary.