Average global barley yields during extreme events are expected to drop between 3pc and 17pc, depending on the conditions, said the study, published in the journal "Nature Plants".
Climate change has already taken a heavy toll on barley.
"Current levels of fossil fuel consumption and Carbon dioxide pollution - business as usual - will result in this worst-case scenario, with more weather extremes negatively impacting the world's beer basket", co-author Nathan Mueller added in the release.
The findings come a week after a dire United Nations report described consequences of risky levels of climate change including worsening food and water shortages, heat waves, sea level rise, and disease. But they said it would affect the quality of life of many people.
Worldwide barley is used for all sorts of purposes, mostly feeding livestock. The price only jumps 15 percent and consumption drops four percent in less severe scenarios. In future sweltering years with a double whammy of heat and drought, losses of barley yield can be as much as 17 percent, computer simulations show.
"There is little doubt that for millions of people around the world, the climate impacts on beer availability and price will add insult to injury", said Prof Dabo Guan, at the University of East Anglia, one of the research team.
John Mara Criticizes Odell Beckham Jr. At NFL Owners Meetings
But Mara did make sure to make one pointed comment: "He needs to do a little more playing and a little less talking". Beckham was completely shut down in the game, as he was held to only two catches for 12 yards in the first half.
Spain defender Ramos: We gifted the first half to England
Paco Alcacer's goal threatened a comeback and Sergio Ramos scored with the final touch but England were well worth their 3-2 win. I used to take a decent amount of interest in England and have been to a couple of tournaments in the past.
Liverpool's Virgil van Dijk to sit out Belgium-Netherlands friendly
James Milner , Mohamed Salah and Virigi van Dijk are all set to be fit for Liverpool's game against Huddersfield on Saturday. Liverpool will now face Huddersfield Town away from home when the Premier League returns to action on Saturday.
"I$3 f you don't want that to happen-if you still want a few pints of beer-then the only way to do it is to mitigate climate change", Guan tells CNN.
The study showed that the price surge was highest in countries that drink the most beer: It predicted that a 38 per cent fall in beer supply will lead to massive hikes in its price in Belgium, Canada, Denmark and Poland.
Even under the two middle-range climate models used in the study, beer consumption is forecast to fall by an average of around 2 billion liters in China alone.
In the United Kingdom, the researchers said, beer consumption could fall by between 0.37 billion and 1.33 billion litres, while the price could as much as double.
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. Global warming could result in extreme weather, such as floods and droughts, which could jeopardise the lives of millions.
Guan and colleagues calculated the impact of severe weather events under different future climate scenarios - ranging from a sharp reduction in greenhouse gas emissions to our current "business as usual" trajectory - on yields in the world's 34 most important barley-growing regions.