Loire Valley (wine) - Climate and Geography

Climate and Geography

The Loire river has a significant effect on the mesoclimate of the region, adding the necessary extra few degrees of temperature that allows grapes to grow when the areas to the north and south of the Loire Valley have shown to be unfavorable to viticulture. In addition to finding vineyards along the Loire, several of the river's tributaries are also well planted-including the Allier, Cher, Indre, Loir, Sèvre Nantaise and Vienne Rivers. The area has a continental climate that is influenced heavily by the Loire River and the Atlantic ocean at the western edge of the region. The climate can be very cool with spring time frost being a potential hazard for the vines. During the harvest months rain can cause the grapes to be harvested under ripe but can also aid in the development of Botrytis cinerea for the region's dessert wines.

Temperature, rainfall and average sunshine time in Angers (Anjou):

Month Jan Feb March Apr May June July Aug Sept Oct Nov Dec Year
Average minimum temperature (°C) 2,1 2,2 3,9 5,6 8,9 11,8 13,6 13,4 11,3 8,4 4,6 2,8 7,4
Average temperature (°C) 5 5,7 8,2 10.4 13,9 16,2 19,2 19,1 16,5 12,7 8 5,6 11,8
Average maximum temperature (°C) 7,9 9,2 12,6 15,3 19 22,6 24,9 24,7 21,8 17 11,4 8,4 16,2
Average monthly rainfall (mm) 62,1 50,8 51,7 44,6 54,4 41,2 43,8 44,9 52,2 59,6 64,5 63,4 633,4
Monthly hours of sunshine (hour/month) 70 92 141 179 201 234 248 237 191 129 89 65 1877
Source : Climatology from 1947 to 2008 - Angers, France

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