That France countries to be the best known wine producing country of the world is probably due to the conditions for cultivating vines in its vineyards.
Nowhere else in the world has such ideal circumstances for cultivating grapes as France for a good French wine. Winters are not too severe nor are summers too drym there is ample rain, and plenty of sun. The tremendous vatiesty of soil types also plays its part in centuries of successful viticulture in France: thick layers of chalk in Champagne, sedimentary layers with lots of shells in the Auxerrois (Chablis), marl, clay, pebbles and gravel in Médoc, bluer and grey shale in Muscadet, tufa in Anjou and Saumur, slate slopes in Collioure and Banyuls, warm boulders in southern Rhône for French wine.
Furthermore there is sufficient water throughout France, indirectly from the sea or directly from the may rivers and underground reserves.
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Portugal's climate is generally moderate without extremes of temperature. The winters are mild and the summers are warm but definitely not too hot.
The north of the country is warmed by the gulf stream of the North Atlantic and the ocean ensures ample moisture.The centre of the country is hotter and drier, especially in summer. The winters there are mild and short. The south has the hottest and driest weather with a moderate Mediterranean climate. Countless wines of distinction originate from this idyllic land, which have been popular with European consumers for a long time. There are other wines that are waiting to be discovered that are of no less quality.
We will deal with the various wine areas of Portugal from north to south and then continue onwards to Madeira and the Azores. The enormous technical backwardness of the Portuguese wine industry has been almost totally done away with in recent decades.