The wine industry has blamed climate change for its worst harvest in 62 years. Hear about it at urban legends and stranger truths. The International Organization of vine and wine, known as OIV, said extreme environmental conditions, end quote, in 2023 partly led to the lowest production of wine in its 50 member states since 1962. A wet spring in much of Europe has caused mildew and crop losses, while other areas saw drought and wildfires. The European Union's wine production was down 10% over 2022