According to the U.S. scientists' economic model, the price of a six-pack of beer could go up by an extra €17 in Ireland.
The apocalyptic impact of climate change has finally been revealed - the price of beer could soar to a tenner a pint (on top of all the global drought, starvation, rising seas and so on).
"For perhaps many millennia, and still at present for many people, beer has been an important component of social gatherings and human celebration", the team said in their report.
Key brewing nations are forecast to be among the worst hit, including Belgium, the Czech Republic and Ireland.
Barley growing regions including the northern Great Plains of the USA, the Canadian prairies, Europe, Australia, and the Asian steppe were all likely to experience more frequent droughts in years to come as a result of global warming, the study in the journal Nature Plants reported.
The researchers said that compared with life-threatening affects of global warming such as the floods and storms faced by millions, a beer shortage may seem relatively unimportant.
Mr Guan said beer price spikes and shortages might even affect social stability, noting the prohibition era in the United States saw organised crime supplying illicit liquor.
"If you still want to still have a couple of pints of beer while you watch the football, then climate change [action] is the only way out". He added that "there is something fundamental in the cross-cultural appreciation of beer".
Researchers used computer models to estimate the impact of various climate change scenarios on barley yields in 34 world regions. But using other grains such as wheat to brew is unlikely to be an option, as all crops will suffer from extreme weather. "We have to all work together to mitigate climate change". This dilemma could lead to shortages not only beer but also chocolate, coffee, and tea.