Is the Bahamas always warm?

I'm going on the Disney Dream cruise and my mom and i want to go in november, where it is near and cheap. Is it always warm in the Bahamas? Because that is our main stop is in the Bahamas. Disney's Castaway Cay is one of the stops, and the other one is Nassau, Bahamas. We just want to see if it is good enough weather. As much information as possible is appreciated.Thanks!