 Vineyards in the Languedoc are generally planted along the coastal plains of the Mediterranean while those in the Roussillon are to be found in the narrow valleys around the Pyrenees . The peak growing season ( between May and August ) is very dry and the majority of annual rainfall occurs during the winter . In the Languedoc , the plains area is the most arid and hottest region of France . The region 's Mediterranean climate is very conducive to growing a large amount of a wide variety of grapes , with vintners in the area excelling in mass production . The average annual temperature is 57 ° F ( 14 ° C ) . The tramontane inland wind from the northwest often accentuates the dry climate ; drought is the most common threat to vine production , with French AOC and European Union regulation prohibiting the use of irrigation . In December 2006 , the French government responded to global warming concerns and relaxed some of the irrigation regulations . 
 Vineyards in the Languedoc are generally planted along the coastal plains of the Mediterranean while those in the Roussillon are to be found in the narrow valleys around the Pyrenees . The peak growing season ( between May and August ) <a href='drop_aux' title='1'><mark>is</mark></a>very dry and the majority of annual rainfall <a href='uninflect' title='2'><mark>occurs</mark></a> during the winter . In the Languedoc , the plains area <a href='drop_aux' title='3'><mark>is</mark></a>the most arid and hottest region of France . The region <a href='null_genetive' title='4'><mark>'s</mark></a>Mediterranean climate <a href='drop_aux' title='5'><mark>is</mark></a>very conducive to growing a large amount of a wide variety of grapes , with vintners in the area excelling in mass production . The average annual temperature <a href='drop_aux' title='6'><mark>is</mark></a>57 ° F ( 14 ° C ) . The tramontane inland wind from the northwest often <a href='uninflect' title='7'><mark>accentuates</mark></a> the dry climate ; drought is the most common threat to vine production , with French AOC and European Union regulation prohibiting the use of irrigation . In December 2006 , the French government responded to global warming concerns and relaxed some of the irrigation regulations . 
Vineyards in the Languedoc are generally planted along the coastal plains of the Mediterranean while those in the Roussillon are to be found in the narrow valleys around da Pyrenees . The peak growing season ( between May and August ) very dry and the majority of annual rainfall occur during the winter . In the Languedoc , the plains area the most arid and hottest region of France . The region  Mediterranean climate very conducive to growin a large amount of a wide variety of grapes , with vintners in tdaarea excelling in mass production . The average annual temperature 57 ° F ( 14 ° C ) . Thdaramontane inland wind from thedarthwest often accentuate the dry climate ; drought is the dat common threat to vine production , with French AOC and European Union regulation prohibiting the udaof irrigation . In December 2006 , the Frdah government responded to global warming concerns and relaxed sum of the irrigation regulations .