We used to live in Vigo about 30 years ago, so our memories are not what you'd call current. Vigo was and still is a thriving city and there are lots of pretty places in Galicia that are worth a visit (at least there was then

).
Don't remember any snow or ice there at this time of year, but there was plenty of rain and wind - bit like the UK in November.
When we were there a stretch of the autopista from Vigo up to (eventually I guess) Santiago de Compostela was opened, which made part of the journey much easier. Santiago cathedral is I believe (never visited it in all the time we were there

) a sight worth seeing. The rias are really beautiful (if you can see through the rain).
We used to go down to Portugal every three months via Tuy and over the narrow iron bridge, which I imagine has been replaced ages ago, into Portugal at Valença, where we bought Portuguese bed linen, table linen, towels and such like, much cheaper than they were available in Vigo. Then Spain and Portugal joined the EU and prices skyrocketed - HoHum. Occasionally we went further down to Oporto, which is an interesting place. And Lisbon, which is where we used to take the ship for dry-docking, became one of my favourite European cities.
Not much help here, I'm afraid (sorry), but I hope you find my meandering memories of some interest.
John