Hello we did it last year and crossing was so smooth but it can be bad,none of use can predict the sea conditions so it is a gamble.the odds are about 4to 1 that it will be rough through the Bay of Biscay.We are going in November and will take some travel pills just in case.
If you look at the answer I have just given to a similar question for the other way you will get some idea. The problem I have is that you have not really said which ship and what the itinerary is because it is the way you cross the Atlantic that makes the difference, a southerly route can even take you through the "doldrums" which is great whereas the northerly route leaves you wide open to winter storms so tell me and I'll tell you. .... Neil.
We have just booked today to travel on OV1 from Crete to Barbados on the 30th October so hope we are as lucky as the lonsdales from derby were last year. Apart from the sea conditions we would also like to know whether it is warm enough to be outside on deck in the early days of the crossing, before you enter the more sheltered waters of the caribbean.
We did this from southampton last november via madeira on OV1 and the seas were remarkably calm, absolutly no problems at all, whoever this may have been more luck than judgment! we really enjoyed our cruise. good luck.
I should add that you will enjoy it better if you like "Sea Days" because you will have five or six of them on the trot plus an extra 5 hours because, as I assume, you are travelling from Europe to the Caribbean. ... Neil.
This is the time to chill out, relax, take in some sun, get an extra hour of life every day and then you can hit the caribbean running when you get there. Love it !! The sea? Its beautiful when calm and exciting when 'choppy'. I have always had calm seas on the southern route, on the northern route we hit the tail end of a Hurricane (Sea Princess)but hardly anyone was ill. Remember that the doctor on board has the answer - a quick injection which is worth its weight in gold, as it returns one to Normal without delay ! So never delay getting it if needed. You are probably more likely to catch a cold from someone on board in November than have a truly bad crossing. Enjoy.