Even the relatively smaller shift from Brazil's shortage in the last couple years resulted in a price surge and a jump in counterfeit coffee beans (which pretend to be fancier coffee varieties than they are). Coffee farmer Luka Kinyere inspects his plants in Kasese, western Uganda.
"We're fearful that by 2050, we might see as much as a 50 percent decline in productivity and production of coffee around the world, which is not so good", Molly Harriss Olson, chief executive of Fairtrade Australia and New Zealand said in a statement.
And numerous countries where coffee exports represent a significant percentage of exports are already feeling the effects of global warming.
To adapt, coffee farmers could move to higher ground or away from the equator.
According to a new report, rising temperatures and changing rainfall patterns are already impacting coffee crops from Africa to Central America and the effects will worsen in the coming decades. The only way coffee could survive would be through human intervention in labs and large industrial growing areas. Already, Brazil's coffee-growing areas are facing a growing number of heat waves, as cold extremes declined between 1960 and 2011.
Earlier this year Andrea Illy, chairman of the global coffee business Illy, told CNBC at Davos that climate change was a threat to coffee production in the medium and long term.
As a kind of primer on coffee production and climate change, the report also offers several visually striking infographics to help drive the message home, particularly among consumers interested in the issue and how they might mitigate their own impact by ensuring the coffee they buy is as responsibly sourced as possible.
By 2080, scientists think wild coffee, which is important for the genetic diversity of farmed coffee, could be extinct.
USA consumption will be up 1.5 percent in the coming year and reach record highs, Bloomberg reported in June. But we can hardly expect these big harvests to continue. "If we sit by and wait until the impacts of climate change are so severe that is impacting our supply chain, then that puts us at a greater risk".
"We predict that we will need twice as much as coffee at least - more probably three times as much - by the end of the century, with less than 50 percent of the land available".