I believe Diodorus Siculus (1st century BC) says that they don’t grow grapes in Gaul (roughly modern France) because it’s too cold.
viticulture in Roman Britain. Mentions it being warmer https://www.independent.co.uk/news/science/veni-vidi-viticulture-remains-of-roman-vineyards-found-in-uk-738723.html?&cf=1
At some point the Romans had vineyards in Great Britain.
Also there was long cold snap during the time of the Black Death. Theory is rats and their fleas moved closer to humans.