We provide you with this link to The Weather Channel for the most up to date infomation to plan your cruise vacation.
For example, if you are cruising the Caribbean and plan to do some suba diving on Grand Bahama Island, in the "Local forcast" box you can enter "Freeport" under city and "Diving" under "Related to" and get weather in Freeport relative to diving. You can also select language and many other options to help you learn about the weather at your destination.