Common wisdom suggests white wine for warmer days and red for cool days, but how climate and weather are connected with grape and wine quality is a complex subject.
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| Low temperatures can reduce the formation of anthocyanins, the chemicals that give red wine its deep colour and tannic structure. |
Unusually warm weather during the growing season can cause grapes to develop rapidly and mature earlier at a warmer time in the season, impacting wine flavour and composition.
When the grapes develop too quickly as a result of high temperatures, they can accumulate more sugar, but have less acid causing subsequent wines to be unbalanced and high in alcohol.
In contrast, extremely cool temperatures can have the opposite effect, impacting wine quality by delaying berry development which reduces the formation of sugar and anthocyanins – the chemicals that give red wine its deep colour and tannic structure.
Read the Pursuit story by Dr Nerissa Hannink from the University of Melbourne - “What does climate mean for wine?”
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