I have cruised in Jan, Feb, and Mar, and while the weather is quite unpredictable, usually by the time you are around South Carolina/Georgia border, it becomes warm enough to be outside. That said, you will not be in the pool!!!! Usually it takes until 2nd day until you can be outside, and the 3rd day or so until you can be out on the pool decks and using the pools/sun bathing. They will have plenty of activities indoors to keep you busy! I enjoyed cruising in late winter/early spring. The crowds are significantly less, and once you get to the islands, it is not ungodly hot and humid.
Top 25 Contributor
It should be around the 2nd day of the cruise when you reach around the S. Carolina border.
Number One Contributor
There's no set answer as it's all dependent upon the weather but it should start warming up on your 2nd sea day but might need a light jacket or sweater. 3rd sea day should be when you can be outside without jackets. It all depends as I said on the weather and how far south the cold weather extends.
Top 10 Contributor