Even when the average monthly temperature of the hottest month is not a sufficiently reliable indicator of the expected quality of wine, it may give a certain indication of the summer weather in a given vintage. During the 78 years (1926-2003) of recording data the Wine Research Station in Velké Pavlovice has measured July as being the hottest month 48 times and August 30 times.
The most intensive grape ripening takes place during the period of lowest rainfall which are the months of August and September. Up to 110 mm of rain fell in these two months in 69% of the recorded vintages, while over 110 mm of rain fell in August and September in 31% of cases.
The average monthly temperature of the warmest month are shown in the following table:
In 79.5% of years the wine quality in Moravia will be good, very good or excellent. The risk of lower quality wine in southern Moravia occurs in about 20.5% of vintages.
The influence of the weather on the quality of a vintage is documented in the following table:
Source: Réva a víno v Čechách a na Moravě
© V. Kraus a kol.
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