Pros:
1) Some yachts remain year-round because the owner lives in the region.
2) Some crew like the solitude that off-season usually provides.
3) Crew will potentially have more time off to enjoy activities like winter sports such as skiing.
4) The ports, museums and historical attractions are quieter.
5) It’s easier to find marine service providers.
6) Med cruising destinations typically stay open year-round.
Cons:
1) The biggest potential downside for staying in the Med off-season is the weather. You can’t count on the weather being nice; at night, the temperature can plunge as low as single figures (expect a lot of rain).
2) Places may be closed. Shops and attractions that run for tourist season may be shut during quiet months.
3) Many crew will be heading to the Caribbean (FOMO may creep in).
4) If you like the peak yachting seasons’ hustle and bustle, you may quickly become bored.