We sailed the Western on 1/4/03 this year. We flew down a day early to get some sun before heading to the Caribbean by the pool at the Radisson, but it was only about 44 degrees. That night it was even colder. On Saturday it was still very chilly and really did not warm up that much, though the sun did come out and they still had the sail-away outside on deck...with most people were wearing jackets.
The days at sea were breezy but sunny. You could definately hang by the pool but was cold when the sun hid behind a cloud. That was the one cruise that I never set food in the pool. The hot tubs were crowded all day long.
We did not make it Grand Cayman due to high wind and waves, but Cozumel was great....sunny, high 80's, no humdity. Cold again when we got back to Port Canaveral. Many people said this was an exceptionally cool January. I would sail again in January as the prices were great.
MJ