Yes, the climate is changing, and as a result wine production is shifting away from the previously reliable wine-growing regions into new territories. According to Akshat Rasthi writing for Quartzy,
The map of the wine world is undergoing a dramatic change. World wine production is set to fall to its lowest levels in decades, largely due to the weather, according to estimates from the International Organization of Vine and Wine. Meanwhile, wine production in the UK has reached record highs, with sparkling wines leading the way.
Though experts remain divided on which areas of the world will lose and which will win, they all agree that the world’s most famous wine regions are not going to remain the same. As global average temperatures rise, the best lands to plant a vineyard are moving away from the equator, creeping up into the northern hemisphere and down into the southern hemisphere.
Still the jury is still out about how reliable these new regions will be as wine producers.
But the study was criticized (pdf) for its poor methodology. Though these traditional regions are definitely under threat, follow-up studies have painted a more complex picture. As global temperatures rise, local weather changes may play out differently across the world: Some regions will experience droughts, and others floods. A better way to predict these changes is to study individual regions.
The reality is that we will likely see a continuation of lower yields in wine production, and perhaps more concerning, a shift in the taste of wines. While Jesus counseled that we need to put new wine into new wine skins, it is still unpredictable about what kind of wine will be produced in new wine regions.
Read the whole article for yourself: The Improbable New Wine Countries Climate Change is Creating.