A prominent Australian law firm has raised concerns about the impact of global warming on the country's wine industry.

Adelaide law firm Finlaysons has established a section in its practice to focus on emerging climate change issues, such as the impact on wine.

Finlaysons partner Will Taylor said wine quality could suffer from reduced harvest times, more extreme weather and reduced water supplies brought on by a hotter climate.

"The bottom line is that regions like Barossa Valley, Margaret River, Hunter Valley and Yarra Valley won't be able to grow the grapes they're famous for," Taylor told local reporters.